Relevant bibliographies by topics / Coupled transports

Academic literature on the topic 'Coupled transports'

Author: Grafiati
Published: 8 June 2024

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Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Journal articles on the topic "Coupled transports":

1

Grogan, Dustin F. P., and Terrence R. Nathan. "Passive versus Active Transport of Saharan Dust Aerosols by African Easterly Waves." Atmosphere 12, no. 11 (November 16, 2021): 1509. http://dx.doi.org/10.3390/atmos12111509.

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Theory and modeling are combined to reveal the physical and dynamical processes that control Saharan dust transport by amplifying African easterly waves (AEWs). Two cases are examined: active transport, in which the dust is radiatively coupled to the circulation; passive transport, in which the dust is radiatively decoupled from the circulation. The theory is built around a dust conservation equation for dust-coupled AEWs in zonal-mean African easterly jets. The theory predicts that, for both the passive and active cases, the dust transports will be largest where the zonal-mean dust gradients are maximized on an AEW critical surface. Whether the dust transports are largest for the radiatively passive or radiatively active case depends on the growth rate of the AEWs, which is modulated by the dust heating. The theoretical predictions are confirmed via experiments carried out with the Weather Research and Forecasting model, which is coupled to a dust conservation equation. The experiments show that the meridional dust transports dominate in the passive case, while the vertical dust transports dominate in the active case.
2

Marino, S., M. Shapiro, and P. M. Adler. "Coupled Transports in Heterogeneous Media." Journal of Colloid and Interface Science 243, no. 2 (November 2001): 391–419. http://dx.doi.org/10.1006/jcis.2001.7826.

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Nathan, Terrence R., Dustin F. P. Grogan, and Shu-Hua Chen. "Saharan Dust Transport during the Incipient Growth Phase of African Easterly Waves." Geosciences 9, no. 9 (September 5, 2019): 388. http://dx.doi.org/10.3390/geosciences9090388.

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An analytical analysis is combined with numerical modeling simulations in order to expose the physical and dynamical processes that control the zonal-mean transport of Saharan mineral dust aerosols during the incipient growth phase of African easterly waves. The analytical analysis provides the theoretical basis for understanding and predicting how the waves and background flow combine to affect the zonal-mean eddy transports of dust. The analytically derived transport equations―which are valid for any wave field, irrespective of its spatial or temporal scale―predict that the eddy transports of dust are largest where the maximum in the background dust gradients coincide with a critical surface, i.e., where the Doppler-shifted frequency of the wave field vanishes. Linear simulations of the eddy dust transports are conducted using a mechanistic version of the Weather Research and Forecasting (WRF) model coupled to an interactive dust model. The simulations show that the eddy dust transports are directed down the background dust gradients and that the meridional transports of dust dominate over the vertical transports. The numerical simulations confirm the theoretical predictions. The predictions are used to explain recent statistical analyses of reanalysis data for dust-coupled African easterly waves.
4

Li, Shuang, Yihu Yang, and Weikai Li. "Human ferroportin mediates proton-coupled active transport of iron." Blood Advances 4, no. 19 (October 2, 2020): 4758–68. http://dx.doi.org/10.1182/bloodadvances.2020001864.

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Abstract As the sole iron exporter in humans, ferroportin controls systemic iron homeostasis through exporting iron into the blood plasma. The molecular mechanism of how ferroportin exports iron under various physiological settings remains unclear. Here we found that purified ferroportin incorporated into liposomes preferentially transports Fe2+ and exhibits lower affinities of transporting other divalent metal ions. The iron transport by ferroportin is facilitated by downhill proton gradients at the same direction. Human ferroportin is also capable of transporting protons, and this activity is tightly coupled to the iron transport. Remarkably, ferroportin can conduct active transport uphill against the iron gradient, with favorable charge potential providing the driving force. Targeted mutagenesis suggests that the iron translocation site is located at the pore region of human ferroportin. Together, our studies enhance the mechanistic understanding by which human ferroportin transports iron and suggest that a combination of electrochemical gradients regulates iron export.
5

Merryfield, William J., and George J. Boer. "Variability of Upper Pacific Ocean Overturning in a Coupled Climate Model." Journal of Climate 18, no. 5 (March 1, 2005): 666–83. http://dx.doi.org/10.1175/jcli-3282.1.

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Abstract Variability of subtropical cell (STC) overturning in the upper Pacific Ocean is examined in a coupled climate model in light of large observed changes in STC transport. In a 1000-yr control run, modeled STC variations are smaller than observed, but correlate in a similar way with low-frequency ENSO-like variability. In model runs that include anthropogenically forced climate change, STC pycnocline transports decrease progressively under the influence of global warming, attaining reductions of 8% by 2000 and 46% by 2100. Although the former reduction is insufficient to fully account for the apparent observed decline in STC transport over recent decades, it does suggest that global warming may have contributed to the observed changes. Analysis of coupled model results shows that STC transports play a significant role in modulating tropical Pacific Ocean heat content, and that such changes are dominated by anomalous currents advecting mean temperature, rather than by advection of temperature anomalies by mean currents.
6

Liu, Zhengyu, Chengfei He, and Feiyu Lu. "Local and Remote Responses of Atmospheric and Oceanic Heat Transports to Climate Forcing: Compensation versus Collaboration." Journal of Climate 31, no. 16 (August 2018): 6445–60. http://dx.doi.org/10.1175/jcli-d-17-0675.1.

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We present a theoretical study on local and remote responses of atmosphere and ocean meridional heat transports (AHT and OHT, respectively) to climate forcing in a coupled energy balance model. We show that, in general, a surface heat flux forces opposite AHT and OHT responses in the so-called compensation response, while a net heat flux into the coupled system forces AHT and OHT responses of the same direction in the so-called collaboration response. Furthermore, unless the oceanic thermohaline circulation is significantly changed, a remote climate response far away from the forcing region tends to be dominated by the collaboration response, because of the effective propagation of a coupled ocean–atmosphere energy transport mode of collaboration structure. The relevance of our theory to previous CGCM experiments is also discussed. Our theoretical result provides a guideline for understanding of the response of heat transports and the associated climate changes.
7

Vellinga, Michael, and Peili Wu. "Relations between Northward Ocean and Atmosphere Energy Transports in a Coupled Climate Model." Journal of Climate 21, no. 3 (February 1, 2008): 561–75. http://dx.doi.org/10.1175/2007jcli1754.1.

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Abstract The Third Hadley Centre Coupled Ocean–Atmosphere General Circulation Model (HadCM3) is used to analyze the relation between northward energy transports in the ocean and atmosphere at centennial time scales. In a transient water-hosing experiment, where suppressing the Atlantic meridional overturning circulation (MOC) causes a reduction in northward ocean heat transport of up to 0.75 PW (i.e., 75%), the atmosphere compensates by increasing its northward transport of moist static energy. This compensation is very efficient at low latitudes and near complete at the equator throughout the experiment, but is incomplete farther north across the northern midlatitude storm tracks. The change in atmosphere energy transport enables the model to find a new global-mean radiative equilibrium after 240 yr. In a perturbed physics ensemble of HadCM3 it was found that time-averaged meridional energy transports in ocean and atmosphere can act opposingly. Where model formulation causes an unbalanced mean climate state, for example, an excessive top-of-the-atmosphere radiative surplus at low latitudes, the atmosphere increases its poleward energy transport to disperse this excess. MOC and ocean poleward heat transport tend to be reduced in such model versions, and this offsets the increased poleward atmospheric transport of the low-latitude energy surplus. Model versions that are close to net radiative equilibrium also have ocean heat transport and MOC close to observed values.
8

Juan, Wen-Tau, Ming-Hua Chang, Ying-Ju Lai, Ming-Heng Chen, and Lin I. "Laser Enhanced Transports in Strongly Coupled Dusty Plasmas." Physica Scripta T89, no. 1 (2001): 9. http://dx.doi.org/10.1238/physica.topical.089a00009.

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Tsubaki, Shuji, Naoki Fujita, Fujio Wakaya, Yoshihiko Yuba, and Kenji Gamo. "Linear and nonlinear transports of coupled quantum dots." Superlattices and Microstructures 27, no. 5-6 (May 2000): 363–67. http://dx.doi.org/10.1006/spmi.2000.0842.

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Yang, Qianzi, Yingying Zhao, Qin Wen, Jie Yao, and Haijun Yang. "Understanding Bjerknes Compensation in Meridional Heat Transports and the Role of Freshwater in a Warming Climate." Journal of Climate 31, no. 12 (June 2018): 4791–806. http://dx.doi.org/10.1175/jcli-d-17-0587.1.

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The Bjerknes compensation (BJC) under global warming is studied using a simple box model and a coupled Earth system model. The BJC states the out-of-phase changes in the meridional atmosphere and ocean heat transports. Results suggest that the BJC can occur during the transient period of global warming. During the transient period, the sea ice melting in the high latitudes can cause a significant weakening of the Atlantic meridional overturning circulation (AMOC), resulting in a cooling in the North Atlantic. The meridional contrast of sea surface temperature would be enhanced, and this can eventually enhance the Hadley cell and storm-track activities in the Northern Hemisphere. Accompanied by changes in both ocean and atmosphere circulations, the northward ocean heat transport in the Atlantic is decreased while the northward atmosphere heat transport is increased, and the BJC occurs in the Northern Hemisphere. Once the freshwater influx into the North Atlantic Ocean stops, or the ocean even loses freshwater because of strong heating in the high latitudes, the AMOC would recover. Both the atmosphere and ocean heat transports would be enhanced, and they can eventually recover to the state of the control run, leading to the BJC to become invalid. The above processes are clearly demonstrated in the coupled model CO2 experiment. Since it is difficult to separate the freshwater effect from the heating effect in the coupled model, a simple box model is used to understand the BJC mechanism and freshwater’s role under global warming. In a warming climate, the freshwater flux into the ocean can cool the global surface temperature, mitigating the temperature rise. Box model experiments indicate clearly that it is the freshwater flux into the North Atlantic that causes out-of-phase changes in the atmosphere and ocean heat transports, which eventually plays a stabilizing role in global climate change.
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Journal articles Dissertations / Theses Books

Dissertations / Theses on the topic "Coupled transports":

1

Myagkiy, Andrey. "Mineralization of Nickel in saprolitic ore of New Caledonia : Dynamics of metal transfer and modeling of coupled geochemical and hydrodynamic processes." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0277/document.

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La Nouvelle-Calédonie détient d’importantes réserves de nickel latéritique et est devenue, en 2017, le cinquième producteur mondial de Ni. Ces dépôts sont habituellement considérés comme résultant d’altération latéritique intense de la péridotite, qui constitue la principale source de nickel. Ainsi, le principal modèle conceptuel de la formation des minerais de nickel latéritique en Nouvelle-Calédonie est un modèle per descensum où la plupart des éléments (Mg, Ni et Si) ont été lessivés depuis la surface, en particulier lors du développement du sol latéritique. Le nickel est ensuite reprécipité, soit dans la goethite de la latérite fine, soit au niveau de la saprolite, sous forme de goethite et de silicates Mg-Ni, dont des talc-like ou kérolite. Les observations minéralogiques et structurales récentes ainsi que les données minières ont cependant mis en évidence de nombreux types d’hétérogénéités dans les concentrations, et la distribution des porteurs de Ni. Comprendre les facteurs la mobilité de cet élément, ses mécanismes de piégeage ainsi que les paramètres chimiques et hydrodynamiques à l’origine de ce piégeage, est essentiel afin de prévoir la distribution du nickel dans les profils latéritiques en Nouvelle-Calédonie, et constitue l’objectif de cette thèse. Ce travail est basé sur le développement (i) d’un modèle 1D s’intéressant en particulier au comportement géochimique du nickel lors de l’altération de l’ophiolite, sa comparaison avec les observations in situ et une compréhension détaillée de la mobilité des éléments traces pendant le processus, et (ii) d’un modèle 2D hydro-géochimique couplé avec l’hydrodynamique complexe des profils latéritiques, améliorant ainsi la connaissance du contrôle structural sur la redistribution et la minéralisation du nickel. Tandis que les simulations 1D permettent de mieux comprendre les aspects chimiques contrôlant les processus de rétention du nickel au sein d’un profil, le modèle 2D se révèle être un outil puissant pour la compréhension de la formation des dépôts locaux les plus riches en nickel. Les résultats du modèle 2D montrent une remobilisation du nickel depuis les horizons supérieurs puis sa reprécipitation sous forme de silicates dans la saprolite. Le nickel remobilisé provient principalement de la zone saprolitique à cause de la dissolution des silicates de nickel formés précédemment ainsi que de l’olivine résiduelle de cette zone. Ce modèle a également révélé que l’horizon latéritique (et en particulier les oxy- hydroxydes de nickel) avait un faible impact dans la remobilisation du nickel. L’infiltration latérale de l’eau contenant le nickel dissout issu des formations surincombantes est à l’origine de la formation des zones les plus riches dans les parties inférieures du profil. Cette redistribution est entièrement contrôlée par l’hydrodynamique locale, la topographie ainsi que l’orientation et la position des fractures. Les modèles présentés permettent d’expliquer les processus de formation des minerais de nickel latéritique saprolitique, améliorant ainsi la compréhension des paramètres contrôlant la mobilité des éléments traces dans un environnement ultramafique. Ceci donne une nouvelle clé de distribution du nickel dans les profils actuels, qui peut devenir un outil pour la prospection minière, et la recherche de nouvelles ressources exploitables
New Caledonia hosts significant lateritic nickel reserves, and presently became the fifth largest Ni producer in the world. These deposits are generally thought to be closely as- sociated with the intense chemical and mechanical weathering of peridotite bedrock that is a principal source of nickel. Thus, the main ore genesis model for Ni ores in New Caledonia is based on a single per descensum model where most elements (Mg, Ni, and Si) are leached from the surface, particularly, during lateritic soil development. Nickel is then concentrated either in the fine-grained laterite where goethite is the main Ni bearer, the so-called ’lateritic ore’, or below the laterites, in the saprolite level, where nickel occurs as goethite and several types of Mg-Ni silicates, in particular kerolite. Recent mineralogical and structural observations together with mining data have revealed a lot of different types of heterogeneities associated with the distribution and mineralogy of Ni bearing minerals. Therefore, in depth investigations of Ni mobility, its retardation processes along with its governing chemical and hydrodynamic parameters are of big importance for understanding and subsequent prediction of Ni distribution in profiles of New Caledonia. Such an investigation is an objective of the present work. The concept is based on the development of i) a powerful 1D model with particular emphasis on Ni geochemical behavior during ophiolite weathering, its comparison with in situ observations, and detailed understanding of trace elements mobility, and ii) 2D hydro-geochemical model coupled with complex hydrodynamics, that would additionally provide new insight into the structural control on Ni redistribution and mineralization. While the 1D simulations provide a remarkable result for understanding the chemical features that drive Ni retention processes in a profile, 2D model appears to be a powerful tool for understanding how local Ni-enrichments may form. The results of this model show the reactivation of Ni from upper horizons and its concentration in neo-formed silicates in bottom of the saprolite. The reactivated Ni comes mostly from the saprolite horizon due to the redissolution of previously formed Ni-bearing silicates and still persisting in this olivine zone. Modeling has revealed minor contribution of the laterite horizon (Ni-oxi-hydroxides) into the Ni remobilization. The lateral infiltration of water with remobilized Ni from areas such as topographic highs to downstream slope areas leads to the formation of richest deposits in this lower part of profile. The manner of redistribution is fully governed by the topographic slopes, orientation and position of the fractures. Presented models appear to be of importance in attempt of explanation of Ni mineralization processes, revealing the main keys to understanding the control of trace elements mobility in ultramafic environment. The latter gives new insights into the Ni distribution in present day profiles and, therefore, may greatly help in mineral prospecting and forecasting the distribution of future resources
2

Décultot, Léa. "Étude et modélisation du procédé de refusion par plasma d’arc en creuset froid (PAMCHR) d’alliages de titane pour des applications aéronautiques." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0031.

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Le procédé Plasma Arc Melting Cold Hearth Refining (PAMCHR) permet de recycler des chutes de titane afin d’élaborer des alliages de titane de qualité aéronautique. Les travaux de thèse présentés dans ce manuscrit se concentrent sur l’étape d’affinage du procédé. Elle correspond, après fusion de la matière et avant coulée en lingotière, au transport du métal liquide dans un creuset à fond plat en cuivre refroidi à l’eau. L’apport de chaleur du procédé se fait par des torches à plasma, dans un environnement de gaz inerte. Une modélisation tridimensionnelle de l’écoulement thermo-hydrodynamique de l’alliage de titane, a été développée avec pour base le logiciel CFD Ansys-Fluent. L’objectif de cet outil, nommé PAM3D, est d’améliorer notre compréhension du comportement du titane liquide au sein du creuset d’affinage. Un grand nombre de fonctions ont été intégrées au modèle pour décrire, entre autres, les transferts thermique et dynamique entre le jet de plasma et la surface du bain liquide. La compréhension de ces transferts est primordiale à la modélisation du procédé : ils ont pu être obtenus à l’aide d’une série d’essais, réalisés sur un four pilote PAMCHR, et de simulations obtenues par le développement de deux modèles numériques simples. Des résultats de simulations obtenues par cette première version de PAM3D sont confrontés à des mesures prises à partir de fusions expérimentales, et la comparaison est jugée satisfaisante. Cependant, la valeur maximale implémentée dans le modèle de la contrainte pariétale, dû à l’impact de la torche à la surface du bain, semble être sous-estimée. Des simulations complémentaires mettent d’ailleurs en avant le rôle important des forces hydrodynamiques sur le comportement thermique du bain, et en particulier de cette contrainte pariétale
The recycling of titanium scraps can be achieved using the Plasma Arc Melting Cold Hearth Refining (PAMCHR) process with the aim of producing aeronautical titanium alloy ingots. In this manuscript, the research work focuses on the refining stage of the process where the liquid is transported in a horizontal copper water-cooled crucible. This important step takes place downstream the melting of the charge and upstream the casting of liquid titanium into the ingot mold crucible. Plasma torches are used as heat source of PAMCHR process, which is conducted under an atmosphere of inert gas. A three-dimensional modeling of the thermo-hydrodynamic flow of the titanium alloy has been set up based on Ansys-Fluent CFD software. The purpose of this tool, named PAM3D, is to improve our understanding of the liquid titanium behavior within the refining crucible. A large number of user functions have been integrated into the model to describe, among other mechanisms, the thermal and momentum transferred from the plasma plume to the surface of the liquid bath. The analysis of these transfers is essential for modeling the process. They are obtained by a study coupling melting tests, carried out in a pilot PAMCHR furnace, and numerical modeling. Numerical results, obtained by this first version of PAM3D are compared to experimental measurements, and the agreement is satisfactory. However, the maximum value of the shear stress, due to the impact of the plasma plume on the bath surface, implemented in the model seems to be underestimated. Moreover, complementary simulations highlight the important role of hydrodynamic forces on the thermal behavior of the bath, and in particular of this shear stress
3

Raturi, Sagar. "Energetics and structural aspects of cation-coupled drug transport by NorM multidrug transporters." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/284914.

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NorM multidrug transport proteins belong to the multiple antibiotics and toxins extrusion (MATE) family of secondary active transporters. Members of this family are present across all species including bacteria, plants and humans. In bacteria, their over-expression can lead to antibiotic resistance, whereas in the human body, the transporters can alter the plasma levels of drugs. NorM proteins are therefore relevant for the pharmacokinetic properties of drugs. Previously, NorM from Vibrio cholerae (NorM-VC) was shown to export drug (ethidium) in an antiport reaction that is coupled to the simultaneous uptake of protons and sodium ions down their electrochemical gradients across the plasma membrane. But NorM from Pseudomonas stutzeri (NorM-PS) was shown to transport DAPI by utilising proton cycling exclusively. NorM-VC and NorM-PS share 42% identical amino-acid residues and yet their functions differ in terms of their ion coupling properties. These differences in functionality of two highly homologous proteins provide an excellent opportunity to carry out a comparative study. The work presented in this thesis investigates the energetics of drug transport processes by NorM-VC and NorM-PS and the structural basis for ion-coupled drug transport by NorM-VC. Ethidium efflux assays in intact Lactococcus lactis cells were used to study the effect of the magnitude and composition of the proton- and sodium-motive force on transport activity. Furthermore, ethidium binding assays were used to study partial reactions in drug efflux processes. These biochemical data were supplemented by computational studies and analyses of current protein structures. Based on the observations detailed here, a novel transport model for NorM-VC is proposed, which explains published findings for NorM-VC and other MATE transporters. The model represents a potentially universal mechanism for MATE transporters that can be used to predict further structure-function relationships in this important family of member transporters.
4

Roche, Benoît. "Transport électronique à travers deux dopants, en régime statique et dynamique dans des transistors silicium." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00947330.

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Dans cette thèse, nous nous sommes intéressés à l'étude à basse température de dispositifs en silicium de taille nanométrique. Dans ces dispositifs, il est possible de faire passer le courant électrique à travers un nombre réduit de dopants. Nous avons étudié plus spécifiquement le cas de deux dopants en séries, dont les potentiels électrostatiques sont contrôlés indépendamment par deux tensions de grille. En régime de transport électronique statique, il est possible d'effectuer une spectroscopie des niveaux électronique des dopants. On mesure la séparation des deux premiers états de dopants phosphore, qui est proche de 10 meV, alors qu'elle est de 11,7 meV pour des dopants dilués dans un cristal massif. Cette différence s'explique par la proximité des dopants avec une interface avec de l'oxyde de silicium. En régime dynamique, lorsque les niveaux des dopants sont modulés par un signal périodique, on observe qu'un courant est généré par le dispositif. L'évolution du courant en fonction des tensions de grille est simulée en prenant en compte les couplages tunnels du système. À haute fréquence, lorsque l'on observe la quantification d'énergie électromagnétique échangée avec le système, on reproduit le courant mesuré en fonction de l'amplitude du signal appliqué sur les grilles. Cette mesure permet de mettre en évidence la cohérence d'un électron partagé sur deux dopants.
5

Ippisch, Olaf. "Coupled transport in natural porous media." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=96376022X.

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Ippisch, Olaf. "Coupled transport in natural porous media." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10605053.

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Kronbichler, Martin. "Computational Techniques for Coupled Flow-Transport Problems." Doctoral thesis, Uppsala universitet, Avdelningen för teknisk databehandling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-162215.

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This thesis presents numerical techniques for solving problems of incompressible flow coupled to scalar transport equations using finite element discretizations in space. The two applications considered in this thesis are multi-phase flow, modeled by level set or phase field methods, and planetary mantle convection based on the Boussinesq approximation. A systematic numerical study of approximation errors in evaluating the surface tension in finite element models for two-phase flow is presented. Forces constructed from a gradient in the same discrete function space as used for the pressure are shown to give the best performance. Moreover, two approaches for introducing contact line dynamics into level set methods are proposed. Firstly, a multiscale approach extracts a slip velocity from a micro simulation based on the phase field method and imposes it as a boundary condition in the macro model. This multiscale method is shown to provide an efficient model for the simulation of contact-line driven flow. The second approach combines a level set method based on a smoothed color function with a the phase field method in different parts of the domain. Away from contact lines, the additional information in phase field models is not necessary and it is disabled from the equations by a switch function. An in-depth convergence study is performed in order to quantify the benefits from this combination. Also, the resulting hybrid method is shown to satisfy an a priori energy estimate. For the simulation of mantle convection, an implementation framework based on modern finite element and solver packages is presented. The framework is capable of running on today's large computing clusters with thousands of processors. All parts in the solution chain, from mesh adaptation over assembly to the solution of linear systems, are done in a fully distributed way. These tools are used for a parallel solver that combines higher order time and space discretizations. For treating the convection-dominated temperature equation, an advanced stabilization technique based on an artificial viscosity is used. For more efficient evaluation of finite element operators in iterative methods, a matrix-free implementation built on cell-based quadrature is proposed. We obtain remarkable speedups over sparse matrix-vector products for many finite elements which are of practical interest. Our approach is particularly efficient for systems of differential equations.
8

Mavkov, Bojan. "Control of coupled transport in Tokamak plasmas." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT004/document.

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L'objectif de cette thèse est le développement de nouvelles méthodes d'analyse et de commande pour une classe d'équations aux dérivées partielles couplées permettant de modéliser le transport combiné du flux magnétique et de la pression (produit de la densité et de la température) dans les plasmas tokamak. Le système couplé est représenté par deux équations 1D de diffusion résistive. Dans cette thèse, on a obtenu deux types de modèles: le premier repose sur des principes physiques et le second exploite les données obtenues en utilisant des techniques d'identification des systèmes. La conception de commande est basée sur l'etude en dimension infinie en utilisant l'analyse de Lyapunov. Le contrôle composite est synthétisé en utilisant la théorie des perturbations singulières pour isoler la composante rapide de la composante lente. Tout le travail théorique est implémenté et testé dans des simulations basées sur la physique avancée en utilisant le simulateur de plasma pour les tokamaks DIII-D, ITER et TCV
The objective of this thesis is to propose new methods for analysis and control of partial differential equations that describe the coupling between the transport models of the electron pressure (density multiplied by the temperature) and the magnetic flux in the tokamak plasma. The coupled system is presented by two1D resistive diffusion equations. In this thesis two kinds of control models are obtained. The first is a first-principle driven model and the second one is the data-driven model obtained using system identification techniques. The control design is based on an infinite dimensional setting using Lyapunov analysis. Composite control is designed using singular perturbation theory to divide the fast from the slow component. All the theoretical work is implemented and benchmarked in advanced physics based on simulations using plasma simulator dor DIII-D, ITER and TCV tokamaks
9

Simpson, Brent W. "Genetic investigation of how an ATP hydrolysis cycle is coupled to lipopolysaccharide transport." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523988371297363.

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Bouyssier, Julien. "Transports couplés en géométries complexes." Toulouse 3, 2012. http://thesesups.ups-tlse.fr/1929/.

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Ces travaux s'intéressent aux questions de transports non stationnaires et de transferts stationnaires de chaleur et de masse par convection-diffusion au sein de géométries complexes. Par complexe, nous entendons d'une part pour le transport que le fluide est convecté au sein d'une cavité de section quelconque lentement variable dans la direction longitudinale, c'est à dire ayant des variations longitudinales grandes devant hauteur et largeur moyennes. Nous considérons d'autre part le transfert au sein de domaines non-axisymétriques dans lesquels sont plongés un ou plusieurs tubes où le fluide porteur s'écoule. Pour ce qui concerne le transfert, ce travail a consisté à montrer comment étendre le principe, valider l'utilisation, et illustrer l'efficacité d'une décomposition en mode de Graetz pour la prédiction des échanges dans des configurations réalistes d'échangeurs. Cette décomposition permet de formuler le problème initial 3D comme un problème aux valeurs propres généralisées en 2D dont la résolution numérique est drastiquement moins coûteuse. Nous généralisons la notion de mode de Graetz à des conditions aux limites latérales quelconques et, en particulier pour le cas d'échangeurs équilibrés où nous avons mis en évidence un nouveau mode linéairement variables dans la direction longitudinale. Nous mettons en oeuvre le calcul de ces modes de Graetz dans le cas de configurations semi-infinies pour traiter, par exemple, des configurations transversalement périodiques (types plancher chauffant) et montrons qu'un faible nombre de modes suffit pour donner une très bonne approximation des transferts. Dans le cas d'échangeurs finis couplé avec des tubes en entrée/sortie, nous montrons comment déterminer les amplitudes des modes de Graetz dans les différents domaines par la minimisation d'une fonctionnelle associée aux conditions d'entrée sorties retenues. Ces modes permettent l'étude paramétrique systématique des champs de température, des flux de chaleurs entre les domaines fluides et solides ainsi que des rendements thermiques d'un échangeur à deux tubes. Nos résultats indiquent que la longueur d'échange caractéristique est gouvernée par le premier mode de Graetz généralisé à grand nombre de Péclet. Nous montrons aussi, en particulier, qu'un échangeur symétrique possède un spectre symétrique, et une évolution amont/aval symétrique. Dans le cas de la dispersion de Taylor, nous avons établi une forme conservative 3D des équations de dispersion de Taylor en géométrie variable généralisant le cas 2D déjà connu. Nous avons ensuite implémenté en éléments finis puis validé numériquement ces équations de dispersion en 2D et 3D. Nous montrons que les variations longitudinales 3D de la cavité peuvent considérablement augmenter la dispersion longitudinale
This work interest is about stationary transfer and non-stationary transport by convection-diffusion onto complex geometries. For transport issues, complex refers to convection into flattened cavity of arbitrary transverse shape, slowly varying along the longitudinal direction. In the context of transfer, complex refers to non-axisymmetric domains of arbitrary transverse shape along which one or several parallel tubes convect heat or mass. For the transfer problem, this work extends the principle, validates the use, and illustrates the efficiency of Graetz modes decompositions for exchanges prediction in realistic exchangers configurations. This decomposition permits to formulate the initial 3D problem as a generalysed 2D eigenvalue problem, the numerical evaluation of which is drastically reduced. We generalyze Graetz modes solutions for arbitrary applied lateral boundary conditions. In the particular case of balanced exchangers, we bring to the fore a new neutral mode whose longitudinal variations are linear as opposed to classical Graetz modes displaying exponential decay. The numerical computation of those modes for semi-infinite configurations with lateral periodic boundary conditions shows that a few number of those provides a very good approximation for exchanges. In the case of finite exchangers coupled with inlet/oulet tubes, we show how to evaluate the amplitudes of Graetz modes in the various domains (inlet, exchanger, outlet) from functional minimization associated with input/output boundary conditions. The evaluation of these amplitudes permit a systematic parametric study of temperature fields, heat fluxes between fluid and solid, and hot/cold performance of a couple-tube exchanger. Our results indicate that the typical exchange length is governed by the first Graetz mode at large P\'eclet number. We also show that a symmetric exchanger has a symmetric spectrum and a upward/backward symmetric evolution. In the case transport we elaborate theoretically the conservative form of 3D Taylor dispersion equations into variable cavities which generalyzes the framework already known in 2D. We numerically implement these averaged dispersion equations with finite element, and validate in 2D the obtained results. We show that 3D longitudinal variations of a cavity has a strong impact on the longitudinal dispersion
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Books on the topic "Coupled transports":

1

Poyner, David. G Protein Coupled Receptors: Essential Methods. Chichester: John Wiley & Sons, 2010.

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David, Poyner, and Wheatley Mark, eds. G-protein coupled receptors: Methods express. Chichester, West Sussex, UK: John Wiley & Sons, 2009.

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David, Poyner, and Wheatley Mark, eds. G-protein coupled receptors: Methods express. Chichester, West Sussex, UK: John Wiley & Sons, 2009.

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Leonard, Jason. Exciton Transport Phenomena in GaAs Coupled Quantum Wells. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69733-8.

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L, Boersma, and Oregon State University. Agricultural Experiment Station., eds. Model of coupled transport of water and solutes in plants. Corvallis, Or: Agricultural Experiment Station, Oregon State University, 1988.

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International Symposium on 25 Years of Research on the Brush Border Membrane and Sodium-Coupled Transport (1985 Aussois, France). Ion gradient-coupled transport: Proceedings of the International Symposium on 25 Years of Research on the Brush Border Membrane and Sodium-Coupled Transport held in Aussois (France), 18-20 September 1985. Edited by Alvarado Francisco, Os Carel H. van, Institut national de la santé et de la recherche médicale (France)., and Centre national de la recherche scientifique (France). Amsterdam: Elsevier Science Publishers, 1986.

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Pavlov, G. A. Transport processes in plasmas with strong coulomb interaction. Amsterdam, The Netherlands: Gordon and Breach Science Publishers, 2000.

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Ishizuka, Hiroaki. Magnetism and Transport Phenomena in Spin-Charge Coupled Systems on Frustrated Lattices. Tokyo: Springer Japan, 2015. http://dx.doi.org/10.1007/978-4-431-55663-3.

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Barghouty, A. F. Coupled particle transport and pattern formation in a nonlinear leaky-box model. Huntsville], Ala: National Aeronautics and Space Administration, Marshall Space Flight Center, 2009.

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Pavlov, G. A. Prot͡sessy perenosa v plazme s silʹnym kulonovskim vzaimodeĭstviem. Moskva: Ėnergoatomizdat, 1995.

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Book chapters on the topic "Coupled transports":

1

Fuchs, Hans U. "Conduction and Coupled Transports." In Graduate Texts in Physics, 535–66. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7604-8_14.

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Holzbecher, Ekkehard, and Ahmed Hadidi. "Sediment Transport in Shallow Waters as a Multiphysics Approach." In Natural Disaster Science and Mitigation Engineering: DPRI reports, 423–37. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2904-4_16.

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AbstractSuspended particle and bed-load transport are usually high during flooding events. For that reason, sediment transport is an important feature to be taken into account when studying floods. Measures that aim to mitigate the negative impacts of floods depend on such studies. Sediment transport phenomena are complex due to their coupling behavior with fluid flow. Due to the erosion and sedimentation of particulate matter, the ground surface changes during the passing of a flood. The courses of unregulated rivers and wadis after floods are different than those before floods. Flowing water transports sediments, and vice versa; sediment redistribution affects the flow of water due to changes in the ground surface and other factors. Computer simulations of sediment transport must take the coupling between water flow and transport processes into account. Here, a multiphysics approach in such a coupled model is presented. Shallow water equations (SWE) representing water height and velocity are coupled with equations for suspended particulate matter and bed loads. Using COMSOL Multiphysics software, an implementation is presented that demonstrates the capability and feasibility of the proposed approach. The approach is applied to the problems of scouring and sedimentation at obstacles, which are particularly important for ensuring the stability of bridges across rivers and wadis.
3

Loret, Benjamin, and Fernando M. F. Simões. "Coupled transports in tissues endowed with a fixed electrical charge." In Biomechanical Aspects of Soft Tissues, 591–624. Boca Raton : Taylor & Francis, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315110783-18.

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Berkovits, Richard. "Transport Through Low Density Quantum Dots." In Strongly Coupled Coulomb Systems, 493–96. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47086-1_89.

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Kanner, Baruch I. "Sodium-Coupled GABA and Glutamate Transporters." In Neurotransmitter Transporters, 151–69. Totowa, NJ: Humana Press, 1997. http://dx.doi.org/10.1007/978-1-59259-470-2_5.

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Pavlov, G. A. "Effective Transport Coefficients in Low Temperature Multicomponent Plasma." In Strongly Coupled Coulomb Systems, 695–97. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47086-1_131.

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Röpke, Gerd. "Dielectric Function and Transport Coefficients in Strongly Coupled Plasmas." In Strongly Coupled Coulomb Systems, 679–82. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47086-1_127.

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Ichimaru, Setsuo, Hiroshi Iyetomi, and Shigenori Tanaka. "Thermodynamic Functions, Transport Coefficients and Dynamic Correlations in Dense Plasmas." In Strongly Coupled Plasma Physics, 3–18. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1891-0_1.

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Itoh, Naoki. "Transport Processes and Neutrino Emission Processes in Dense Astrophysical Plasmas." In Strongly Coupled Plasma Physics, 151–59. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1891-0_15.

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Sharp, Barry L., and Ciaran O'Connor. "Aerosol Generation and Sample Transport." In Inductively Coupled Plasma Spectrometry and its Applications, 98–133. Oxford, UK: Blackwell Publishing Ltd, 2007. http://dx.doi.org/10.1002/9780470988794.ch4.

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Conference papers on the topic "Coupled transports":

1

Xiao, Han, Luojia Wang, Zheng-Hong Li, Xianfeng Chen, and Luqi Yuan. "Excitation of photon localization state with giant atom coupled in a waveguide-QED system." In CLEO: Applications and Technology. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jw3b.112.

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We study a theoretical model where light transports along a dynamically-modulated coupled-resonator waveguide interacting with a giant atom, and find a bound state where photon is localized and excited atom exhibits a subradiant decay.
2

Conte, Fabrizio Lo, Jean-Michel Sallese, and Maher Kayal. "Smart power IC simulation of substrate coupled current due to majority and minority carriers transports." In Technology (ICICDT). IEEE, 2010. http://dx.doi.org/10.1109/icicdt.2010.5510262.

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Hwang, J. J. "Heat Transfer in a Porous Cathode of Fuel Cells." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72731.

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This paper has provided an innovative aspect in the heat transfer of fuel-cell related studies. A heat/mass coupled modeling approach is presented to predict the transport phenomena inside the porous electrode of a fuel cell. The energy equations based on the local thermal non-equilibrium (LTNE) is derived to resolve the temperature difference between the solid and fluid phases inside the porous electrode. The surface heat transfer is coupled with the species transports via a macroscopic electrochemical model on the reaction boundary. A general criterion for the local thermal non-equilibrium in porous electrodes is first proposed in terms of non-dimensional parameters of engineering importance. Then, the significance of local thermal non-equilibrium in a typical porous electrode is assessed. Furthermore, detailed distributions of the local temperature, local Nusselt number, species concentration, and electric current density inside the porous electrode of fuel cells are presented. Finally, the effect of LTNE parameters on the thermal-fluid behaviors in the porous electrode is investigated.
4

Mateják, Marek. "Creating cardiovascular and respiratory models using Physiolibrary 3.0." In 15th International Modelica Conference 2023, Aachen, October 9-11. Linköping University Electronic Press, 2023. http://dx.doi.org/10.3384/ecp204463.

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The free open-source library called Physiolibrary (https://github.com/MarekMatejak/Physiolibrary) in version 3.0 recast components from physiological domains such as hydraulic (cardiovascular), thermal, osmotic and chemical into Modelica Standard Library (MSL) concept of Fluid/Media. Components are expanded to include gases transports, acid-base, electrolytes, nutrients delivery and endocrines by simple selecting pre-packaged media. They can be connected directly (the same medium) or across membranes (different media), allowing small physiological models to be easily coupled within more quantitative ones with minimal effort.
5

Zhuang, Yuan, and Decheng Wan. "Fully Coupled Analysis of Ship Motion and Sloshing Tanks in Regular and Irregular Waves." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78378.

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Fully coupled analysis of ship motion and sloshing tank in waves is essential for floating structures which store and transports natural gas. For partially filled tanks would generate violent sloshing due to external wave excitation, and the sloshing flow can consequently affect ship motion. Therefore, how to evaluate ship motion and sloshing phenomenon in tank is of great importance, especially under real sea state, when wave induced sloshing would be more complex than that under linear wave condition. In the present work, a CFD-based method is applied to simulate both external wave field and inner sloshing tank field in regular waves and irregular waves. The ship is a simplified FPSO, with two LNG tanks. All the numerical simulations are carried out by the in-house CFD code naoe-FOAM-SJTU, which is developed on the open source platform OpenFOAM. The regular and irregular wave condition is simulated based on open source toolbox waves2Foam. The main parameters of coupling effect of ship motion and sloshing tank, such as the time history of ship motion, sloshing phenomenon in tanks are obtained by our computations. The predicted results for the coupling effects of ship motion and sloshing tank in regular waves are compared with the corresponding experimental data. The comparison is satisfactory and shows that the CFD method has the ability to simulate coupling effects of ship motion and sloshing tank in waves.
6

Ancona, M. A., M. Bianchi, L. Branchini, F. Catena, A. De Pascale, F. Melino, and A. Peretto. "Off-Design Performance Evaluation of a LNG Production Plant Coupled With Renewables." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90495.

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Abstract In the last years, the increased demand of the energy market has led to the increasing penetration of renewable energies, in order to achieve the primary energy supply. Simultaneously, natural gas is predicted to play a vital and strategic role in the energy market, on account of its lower environmental impact than other fossil fuels, both as gaseous fuel for stationary energy generation and as liquefied fuel. In particular, the Liquefied Natural Gas (LNG) is becoming interesting in transports as an alternative to diesel fuel, allowing a decrease in pollutant emissions and a reduction in fuel’s costs for the users. As a consequence, in this context, the LNG production process can be seen as an electrical storage system by the integration with renewables, becoming an interesting solution to avoid the issues related to intermittency and unpredictability of renewables. The aim of the paper is the development of a calculation code and the evaluation of the off-design operation of a LNG production plant coupled with wind renewable energy sources. With this purpose, on the basis of mathematical models from literature, a dedicated calculation code has been developed, able to thermodynamically analyze both design and off-design operation of the integrated process. In addition, in this study the proposed model is employed to investigate the correct integration between renewables and LNG generation, in order to define the optimal choice of the wind size for a given LNG production plant. With this purpose, the LNG plant size of a real prototype has been considered and an economic analysis has been carried out, accounting for the revenue of the LNG sale, the costs for NG purchase, for operation and maintenance and for the initial investment costs, but also with the aim to minimize the electricity introduction into the grid, considered in this study as a penalty.
7

Choi, Byung-Hee, Daniel Orea, Thien Nguyen, N. K. Anand, Yassin Hassan, and Piyush Sabharwall. "Numerical Study of Particle Transport and Deposition in a Horizontal Channel Using a Lagrangian-Based Modelling Approach." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11800.

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Abstract Texas A&M University is participating in the U.S. Department of Energy (DOE) Office of Nuclear Energy’s Versatile Test Reactor (VTR) program to develop instrumentation and tools for a proposed fast spectrum test reactor. Our research project aims to develop and implement techniques to quantify the transport and deposition of fission products in the primary system of Gas Fast Reactors (GFRs) and ultimately in the reactor confinement. Developed techniques will be performed and tested in the NGNP Reactor Building experimental facility, which was previously 1/28 downscaled from General Atomics 350 MWth and built to study the reactor building responses to depressurization accidents. Prior to applying the techniques to the scaled facility, it is essential to verify and validate the performance of developing techniques using numerical simulations and quantify their associated uncertainties. This manuscript presents our numerical study of particle transport and deposition in an experimental channel. The channel has three test sections, each has 3-inch square cross-section, 24 inches in length for a combined total length of 72 inches. The experimental facility is built using transparent materials, allowing the applications of non-intrusive, laser-based measurement techniques, such as Particle Image Velocimetry (PIV) and Particle Tracking Velocimetry (PTV). Details of the experimental setup, measurement techniques, and results of flow field characteristics and particle transports in the channel will be presented in an accompanied manuscript. The simulation domain is built upon the geometrical dimensions of the experimental facility, while upstream flow characteristics of the square channel obtained by PIV measurements are used as boundary conditions. State-of-the-art Lagrangian approach with random walk model is employed to investigate behaviors of surrogate particles within the square channel, coupled with computational fluid dynamics (CFD) model. While the main stream in the channel is solved by Eulerian turbulent model, motion of particles is tracked in Lagrangian framework. It is assumed that well-mixed air-particle mixture at a constant temperature is injected into the horizontal channel. Drag force, gravity force and turbophoresis force are adapted on this simulation and their competition are investigated. Comparisons and validations of simulations and measurements on the flow fields downstream of the channel and characteristics of particle transports and depositions within the square channel will be systematically investigated. Experimental and numerical uncertainties will be quantified using the accepted standard approaches.
8

Liang, Rong, Zhen Chen, and Yu Luo. "Study on Fluid Flow and Heat Transfer Characteristics of Molten Pool Considering the Effects of Turbulence." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54272.

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Recently, the welding of dissimilar material using high energy beam has gained greater popularity. During the process of welding, the differences in physical properties of the materials and high concentration of energy have a great influence on the related fluid flow and heat transfer characteristics in the molten pool. For the welding of a similar material, the fluid flow in the molten pool is often assumed to be laminar in nature. However, in the dissimilar material welding, the fluid flow in the molten pool is more intensive and complicated. It is necessary to take into account the effects of turbulence in the numerical model. In this paper, the simulation of laser welding of low carbon steel and stainless steel couple is carried out. A three-dimensional, transient numerical model is developed using computational fluid dynamics (CFD) method. The characteristics of heat, mass and momentum transports in the molten metal pool are investigated using both laminar and turbulent flow models under identical welding conditions of laser power and moving speed. To improve calculation accuracy, the turbulence effects are taken into account by employing a suitably modified k–ε model. Melting and solidification were simulated not by tracking the solid-liquid interface but using the Enthalpy-Porosity model to save calculation time. Results show that the diffusive transport is enhanced in the turbulent model. This is reflected in the reduction in the maximum values of temperature and velocity magnitude in the turbulent model in comparison to those in the laminar model. The influence of turbulence on the species transport in the molten pool is significant. The phase distribution in the turbulent simulation is found to be more uniform than that obtained in the laminar simulation. Good agreements between the experimental observations and simulation results are obtained by the proposed method. This study has laid a solid foundation for the analysis of welded joint by coupled thermo-hydro-mechanical method.
9

Liu, X. J., M. R. Hyre, G. S. Frost, and S. A. Austin. "Numerical Simulation of Heat Transfer for the Gob Delivery System in Glass Container Production." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66675.

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Heat transfer is extremely important in glass container production since the physical properties of the glass are greatly affected by temperature. The change of glass properties in the production process needs to be closely monitored and controlled to produce high quality containers. The delivery system, which transports glass from feeder to the blank mold of the IS machine, contains the scoop, trough and deflector. It is the first place in the delivery system that molten glass inside feeder is brought into contact with a much colder environment on the delivery equipment. Recent developments in numerical techniques and computing capabilities enable the 3-dimensional free surface simulation of a gob of molten glass in the delivery system. In this study, a finite element method implemented by the computational fluid dynamics package Polyflow from ANSYS is used to track the large free surface deformations of a glass gob during the transport from the feeder to the blank mold. The capability to apply a user defined function allows the effect of varying heat transfer between the contact surface of gob and delivery equipment to be analyzed. A contact algorithm coupled with a Lagrangian remeshing scheme is applied to detect the interface between the molten glass gob and delivery equipment. The heat transfer profile is further studied by using a Fluent model for the equipment and comparing the resultant temperature profiles with measured field data. Better understanding of the delivery system can help manufacturers improve process control and facilitate equipment adjustment to produce containers with consistent loading that leads to increased productivity and reduced defects.
10

Cândido, Sílvio, and José C. Páscoa. "Numerical Analysis of Interfacial Electrohydrodynamic Flow With Modal Decomposition." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-95100.

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Abstract For many applications, Reduced Order Models (ROMs) use linear tools such as Proper Orthogonal Decomposition (POD) as a method for analysing the spatio-temporal coherence of dynamical systems and to construct reduced order models of fluid flows and optimally balanced control laws and identify correlations between different flow quantities. In particular, these techniques are of interest for liquid injection systems due to the inherent complexity of multiphase interactions, and extracting the underlying flow processes is desirable. In this study, we propose to use these techniques to determine a ROM for electrohydrodynamic interfacial flows, more specifically for a Taylor cone jet. From engineering nanofibres to propulsion, the electrohydrodynamic jets bring us an outstanding technique for the emission of microdroplets. This is due to the stretching of interfacial flows due to the external application of an electric field. The present investigation uses an efficient geometric Volume-Of-Fluid (VOF) method, called isoAdvector, to compute the advection equation of the phase fraction. This algorithm computes an immiscible two-phase flow, that is then coupled with the reduced form of the Maxwell equations for an electrostatic field and a transport equation for the electric charges. Electrically induced body forces are incorporated into the hydrodynamic momentum equation with the Maxwell Stress Tensor (MST). A laminar condition is assumed for the flow, thus the laminar incompressible Navier-Stokes’s equations are used to compute the hydrodynamic behaviour of the flow and the associated The modal decomposition POD uses the snapshot technique with a set of high-definition snapshots of the transient behaviour of the jet. The dynamic structures, formed by the velocity field and the electric charge dynamics, determine the fundamental dynamics of the droplet emission. The results show that 2D POD based ROM models can accurately reconstruct the flow field details, properly identifying the flow characteristics. The axial velocity transports the jet almost in a steady regime since a low number of POD modes are needed to preserve 99% of the kinetic energy. The flow fluctuations, principally the breakup of the jet, are represented by the fluctuations of the electric charge density, which is transported by the velocity field and the external electric field.

Reports on the topic "Coupled transports":

1

Jacobsen, J. S., and C. L. Carnahan. Coupled transport processes in semipermeable media. Office of Scientific and Technical Information (OSTI), April 1990. http://dx.doi.org/10.2172/6400480.

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Carnahan, C. L., and J. S. Jacobsen. Coupled transport processes in semipermeable media. Office of Scientific and Technical Information (OSTI), April 1990. http://dx.doi.org/10.2172/6494706.

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3

Jacobsen, J. S., and C. L. Carnahan. Coupled transport processes in semipermeable media. Office of Scientific and Technical Information (OSTI), March 1990. http://dx.doi.org/10.2172/6494710.

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4

Raiciu, C., M. Handley, and D. Wischik. Coupled Congestion Control for Multipath Transport Protocols. RFC Editor, October 2011. http://dx.doi.org/10.17487/rfc6356.

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5

Ginn, Timothy R., Ellyn M. Murphy, Madilyn M. Fletcher, and Jonh H. Cushman. Dynamics of Coupled Microbial and Contaminant Transport. Office of Scientific and Technical Information (OSTI), June 2000. http://dx.doi.org/10.2172/827042.

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Swanson, Jessica. CHARACTERIZING COUPLED CHARGE TRANSPORT WITH MULTISCALE MOLECULAR DYNAMICS. Office of Scientific and Technical Information (OSTI), August 2011. http://dx.doi.org/10.2172/1164073.

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7

Lamb, J. D. Novel macrocyclic carriers for proton-coupled liquid membrane transport. Office of Scientific and Technical Information (OSTI), June 1991. http://dx.doi.org/10.2172/6110290.

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Lamb, J. D., J. S. Bradshaw, and R. M. Izatt. Novel macrocyclic carriers for proton-coupled liquid membrane transport. Office of Scientific and Technical Information (OSTI), July 1992. http://dx.doi.org/10.2172/6957516.

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9

Harff, N. E., J. A. Simmons, and S. K. Lyo. Electron transport in coupled double quantum wells and wires. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/477761.

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10

Hammer, Hans, HyeongKae Park, Luis Chacon, William Taitano, Steven Anderson, and Andrei Simakov. Coupled radiation transport and plasma physics for ICF simulations. Office of Scientific and Technical Information (OSTI), September 2021. http://dx.doi.org/10.2172/1820071.

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