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Journal articles on the topic 'Strongly coupled fluid-structure interaction model'

Author: Grafiati

Published: 6 September 2023

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1

Vierendeels, J., K. Dumont, and P. R. Verdonck. "A partitioned strongly coupled fluid-structure interaction method to model heart valve dynamics." Journal of Computational and Applied Mathematics 215, no. 2 (2008): 602–9. http://dx.doi.org/10.1016/j.cam.2006.04.067.

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2

Suliman, Ridhwaan, and Oliver Oxtoby. "A Quadratic Elasticity Formulation for Dynamic Interacting Structures in Flow." MATEC Web of Conferences 347 (2021): 00033. http://dx.doi.org/10.1051/matecconf/202134700033.

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The deformation of slender elastic structures due to the motion of surrounding fluid is a common multiphysics problem encountered in many applications. In this work we detail the development of a numerical model capable of solving such strongly-coupled fluid-structure interaction problems, and analyse the dynamic behaviour of multiple interacting bodies under fluid loading. In most fluid-structure interaction problems the deformation of slender elastic bodies is significant and cannot be described by a purely linear analysis. We present a new formulation to model these larger displacements. By

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3

Girfoglio, Michele, Annalisa Quaini, and Gianluigi Rozza. "Fluid-structure interaction simulations with a LES filtering approach in solids4Foam." Communications in Applied and Industrial Mathematics 12, no. 1 (2021): 13–28. http://dx.doi.org/10.2478/caim-2021-0002.

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Abstract The goal of this paper is to test solids4Foam, the fluid-structure interaction (FSI) toolbox developed for foam-extend (a branch of OpenFOAM), and assess its flexibility in handling more complex flows. For this purpose, we consider the interaction of an incompressible fluid described by a Leray model with a hyperelastic structure modeled as a Saint Venant-Kirchho material. We focus on a strongly coupled, partitioned fluid-structure interaction (FSI) solver in a finite volume environment, combined with an arbitrary Lagrangian-Eulerian approach to deal with the motion of the fluid domai

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4

MANGANO, G., G. MIELE, and V. PETTORINO. "COUPLED QUINTESSENCE AND THE COINCIDENCE PROBLEM." Modern Physics Letters A 18, no. 12 (2003): 831–42. http://dx.doi.org/10.1142/s0217732303009940.

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We consider a model of interacting cosmological constant/quintessence, where dark matter and dark energy behave as, respectively, two coexisting phases of a fluid, a thermally excited Bose component and a condensate, respectively. In a simple phenomenological model for the dark components interaction we find that their energy density evolution is strongly coupled during the universe evolution. This feature provides a possible way out for the coincidence problem affecting many quintessence models.

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5

Joosten, M. M., W. G. Dettmer, and D. Perić. "Analysis of the block Gauss-Seidel solution procedure for a strongly coupled model problem with reference to fluid-structure interaction." International Journal for Numerical Methods in Engineering 78, no. 7 (2009): 757–78. http://dx.doi.org/10.1002/nme.2503.

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6

Tiwari, Sanat, Vikram Dharodi, Amita Das, Predhiman Kaw, and Abhijit Sen. "Kelvin-Helmholtz instability in dusty plasma medium: Fluid and particle approach." Journal of Plasma Physics 80, no. 6 (2014): 817–23. http://dx.doi.org/10.1017/s0022377814000397.

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The Kelvin-Helmholtz (KH) instability is studied in a two dimensional strongly coupled dusty plasma medium using a fluid approach as well as through a molecular dynamic (MD) simulation. For the fluid description the generalized hydrodynamic (GH) model which treats the strongly coupled dusty plasma as a visco-elastic fluid is adopted. For the MD studies the ensemble of particles are assumed to interact through a Yukawa potential. Both the approaches predict a stabilization of the KH growth rate with an increase in the strong coupling parameter. The present study also delineates the temporal evo

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7

Haq, Mazhar Ul, Zhao Gang, Zhuang Zhi Sun, and S. M. Aftab. "Force Analysis of IPMC Actuated Fin and Wing Assembly of a Micro Scanning Device through Two-Way Fluid Structure Interaction Approach." International Journal of Engineering Research in Africa 21 (December 2015): 19–32. http://dx.doi.org/10.4028/www.scientific.net/jera.21.19.

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In this paper, a methodology is presented to perform force analysis of wing and fin assembly of a micro fish like device through strongly coupled two-way fluid structure interaction approach. The scanning device operates underwater and is towed by a surface vessel through a tow cable. Device fins are actuated by ionic polymer metal composite (IPMC) actuators, an EAP actuator. Fins act as riser, depressor and stabiliser against roll motion of the device. During tow, wing and fin assembly of the device come under hydrodynamic forces. These forces are influenced by fin displacement under IPMC act

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8

Alharbi, A., I. Ballai, V. Fedun, and G. Verth. "Slow magnetoacoustic waves in gravitationally stratified two-fluid plasmas in strongly ionized limit." Monthly Notices of the Royal Astronomical Society 501, no. 2 (2020): 1940–50. http://dx.doi.org/10.1093/mnras/staa3835.

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ABSTRACT The plasma dynamics at frequencies comparable with collisional frequency between various species has to be described in multifluid framework, where collisional interaction between particles is an important ingredient. In our study, we will assume that charged particles are strongly coupled, meaning that they form a single fluid that interacts with neutrals, therefore we will employ a two-fluid model. Here, we aim to investigate the evolutionary equation of slow sausage waves propagating in a gravitationally stratified flux tube in the two-fluid solar atmosphere in a strongly ionized l

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9

Collis, J., D. L. Brown, M. E. Hubbard, and R. D. O’Dea. "Effective equations governing an active poroelastic medium." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 473, no. 2198 (2017): 20160755. http://dx.doi.org/10.1098/rspa.2016.0755.

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In this work, we consider the spatial homogenization of a coupled transport and fluid–structure interaction model, to the end of deriving a system of effective equations describing the flow, elastic deformation and transport in an active poroelastic medium. The ‘active’ nature of the material results from a morphoelastic response to a chemical stimulant, in which the growth time scale is strongly separated from other elastic time scales. The resulting effective model is broadly relevant to the study of biological tissue growth, geophysical flows (e.g. swelling in coals and clays) and a wide ra

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10

MUKHERJEE, SWARNAVA, SHANMUKH SARODE, CHINMAYEE MUJUMDAR, LIZHI SHANG, and ANDREA VACCA. "EFFECT OF DYNAMIC COUPLING ON THE PERFORMANCE OF PISTON PUMP LUBRICATING INTERFACES." MM Science Journal 2022, no. 3 (2022): 5783–90. http://dx.doi.org/10.17973/mmsj.2022_10_2022075.

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The energy efficiency and durability performance of axial piston machines are strongly affected by the tribological behavior of their lubricating interfaces. State-of-the-art approaches typically study these interface in isolation, neglecting possible reciprocal interactions between such interfaces. This paper presents an investigation of the mutual interaction between the piston/cylinder interface and the slipper/swashplate interface of a commercial axial piston pump. The proposed model can predict distributive fluid behavior in the lubricating gaps considering the effects of dynamics of the

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11

Guma, Giorgia, Philipp Bucher, Patrick Letzgus, Thorsten Lutz, and Roland Wüchner. "High-fidelity aeroelastic analyses of wind turbines in complex terrain: fluid–structure interaction and aerodynamic modeling." Wind Energy Science 7, no. 4 (2022): 1421–39. http://dx.doi.org/10.5194/wes-7-1421-2022.

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Abstract. This paper shows high-fidelity fluid–structure interaction (FSI) studies applied to the research wind turbine of the WINSENT (Wind Science and Engineering in Complex Terrain) project. In this project, two research wind turbines are going to be erected in the south of Germany in the WindForS complex-terrain test field. The FSI is obtained by coupling the CFD URANS–DES code FLOWer and the multiphysics FEM solver Kratos Multiphysics, in which both beam and shell structural elements can be chosen to model the turbine. The two codes are coupled in both an explicit and an implicit way. The

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12

Sciberras, Thomas, Marija Demicoli, Ivan Grech, Bertram Mallia, Pierluigi Mollicone, and Nicholas Sammut. "Thermo-Mechanical Fluid–Structure Interaction Numerical Modelling and Experimental Validation of MEMS Electrothermal Actuators for Aqueous Biomedical Applications." Micromachines 14, no. 6 (2023): 1264. http://dx.doi.org/10.3390/mi14061264.

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Recent developments in MEMS technologies have made such devices attractive for use in applications that involve precision engineering and scalability. In the biomedical industry, MEMS devices have gained popularity in recent years for use as single-cell manipulation and characterisation tools. A niche application is the mechanical characterisation of single human red blood cells, which may exhibit certain pathological conditions that impart biomarkers of quantifiable magnitude that are potentially detectable via MEMS devices. Such applications come with stringent thermal and structural specifi

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13

Schmid, P. J., and E. de Langre. "Transient Growth Before Coupled-Mode Flutter." Journal of Applied Mechanics 70, no. 6 (2003): 894–901. http://dx.doi.org/10.1115/1.1631591.

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Transient growth of energy is known to occur even in stable dynamical systems due to the non-normality of the underlying linear operator. This has been the object of growing attention in the field of hydrodynamic stability, where linearly stable flows may be found to be strongly nonlinearly unstable as a consequence of transient growth. We apply these concepts to the generic case of coupled-mode flutter, which is a mechanism with important applications in the field of fluid-structure interactions. Using numerical and analytical approaches on a simple system with two degrees-of-freedom and anti

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14

Nguyen, Anh-Tu. "A numerical research on the interaction between underwater explosion bubble and deformable structure using CEL technique." EUREKA: Physics and Engineering, no. 1 (January 19, 2023): 134–51. http://dx.doi.org/10.21303/2461-4262.2023.002637.

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The dynamic process of an underwater explosion (UNDEX) bubble in the vicinity of deformable structures is a complex phenomenon that has been studied by many researchers. The dynamic process of a UNDEX bubble is a complex transient problem that results in a highly distorted bubble and large deformation of the structure. The previous work has introduced various solutions for studying the interaction between the UNDEX bubble and deformable structure. The interaction between the bubble and nearby structures has been widely solved by the combination of the boundary element method (BEM) and the fini

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15

Wiesenberger, M., and M. Held. "Long-wavelength closures for collisional and neutral interaction terms in gyro-fluid models." Journal of Physics: Conference Series 2397, no. 1 (2022): 012015. http://dx.doi.org/10.1088/1742-6596/2397/1/012015.

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Abstract A collisional gyro-fluid model is presented. The goal of the model is edge and scrape-off layer turbulence. The emphasize in the model derivation heavily lies on ”implementability” with today’s numerical methods. This translates to an avoidance of infinite sums, strongly coupled equations in time and intricate elliptic operator functions. The resulting model contains the four moments density, parallel momentum, perpendicular pressure and parallel energy and is closed by a polarisation equation and parallel Ampere law. The central ingredient is a collisional long-wavelength closure tha

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16

Cioncolini, Andrea, Mostafa R. A. Nabawy, Jorge Silva-Leon, Joseph O’Connor, and Alistair Revell. "An Experimental and Computational Study on Inverted Flag Dynamics for Simultaneous Wind–Solar Energy Harvesting." Fluids 4, no. 2 (2019): 87. http://dx.doi.org/10.3390/fluids4020087.

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This paper presents results from experiments and simplified numerical simulations on the flow-induced dynamics and power generation of inverted flags that combine flexible piezoelectric strips with photovoltaic cells to simultaneously harvest kinetic wind energy and solar radiant energy. Experiments were conducted in a wind tunnel under controlled wind excitation and light exposure, focusing in particular on the dynamics and power generation of the inverted flag harvester. Numerical simulations were carried out using a lattice-Boltzmann fluid solver coupled with a finite element structural sol

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17

THIAMOVA, G., and D. J. ROWE. "PERSISTENCE OF ROTATIONAL STRUCTURE IN NUCLEI AND QUASI-DYNAMICAL SYMMETRY." International Journal of Modern Physics E 15, no. 08 (2006): 1741–50. http://dx.doi.org/10.1142/s0218301306005551.

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The existence of quasi-dynamical symmetry (QDS) in physical systems and its significance for understanding the persistence of rotational structure in nuclei is explained in terms of the mathematical concept of an embedded representation. We consider the spectra obtained by coupling two SU (3) irreps by means of a quadrupole-quadrupole interaction. For a particular large value of this interaction, the two irreps combine to form a single (strongly-coupled) irrep while for zero interaction the weakly-coupled results are mixtures of many irreps. A notable result is the persistence of the rotor cha

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18

Sciberras, Thomas, Marija Demicoli, Ivan Grech, Bertram Mallia, Pierluigi Mollicone, and Nicholas Sammut. "Coupled Finite Element-Finite Volume Multi-Physics Analysis of MEMS Electrothermal Actuators." Micromachines 13, no. 1 (2021): 8. http://dx.doi.org/10.3390/mi13010008.

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Microelectromechanical systems (MEMS) are the instruments of choice for high-precision manipulation and sensing processes at the microscale. They are, therefore, a subject of interest in many leading industrial and academic research sectors owing to their superior potential in applications requiring extreme precision, as well as in their use as a scalable device. Certain applications tend to require a MEMS device to function with low operational temperatures, as well as within fully immersed conditions in various media and with different flow parameters. This study made use of a V-shaped elect

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19

Perczel, Andrås, Raymond Daudel, Jånos G. Ångyån, and Imre G. Csizmadia. "A study on the backbone/side-chain interaction in N-formyl-(L)serineamide." Canadian Journal of Chemistry 68, no. 10 (1990): 1882–88. http://dx.doi.org/10.1139/v90-291.

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The N-formyl-serineamide (For-Ser-NH2), a model diamide for the conformational behaviour of the protein backbone at serine residue, has been gradient optimized for selected conformations at the abinitio 3-21G level. Previous molecular mechanics ECEPP/2 calculations suggested that the optimal side-chain (χ1, χ2) and backbone [Formula: see text] conformations are strongly coupled, due to intramolecular H-bonding formed between the side-chain hydroxyl group and the amide moiety. Four different side-chain geometries (I–IV) were considered at each of the four backbone conformations (α, β, β′, γ) gi

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20

Chen, Lu, Tianzhengxiong Deng, Helezi Zhou, Zhigao Huang, Xiongqi Peng, and Huamin Zhou. "A Numerical Simulation Method for the One-Step Compression-Stamping Process of Continuous Fiber Reinforced Thermoplastic Composites." Polymers 13, no. 19 (2021): 3237. http://dx.doi.org/10.3390/polym13193237.

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Continuous fiber reinforced thermoplastic (CFRTP) composites have many advantages, such as high strength, high stiffness, shorter cycle, time and enabling the part consolidation of structural components. However, the mass production of the CFRTP parts is still challenging in industry and simulations can be used to better understand internal molding mechanisms. This paper proposes a three-dimensional simulation method for a one-step compression-stamping process which can conduct thermoplastic compression molding and continuous fiber reinforced thermoplastic composite stamping forming in one sin

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21

Tian, Wanyi, Lingyun Yao, and Li Li. "A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell." Archives of Acoustics 42, no. 1 (2017): 49–59. http://dx.doi.org/10.1515/aoa-2017-0006.

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Abstract Nowadays, the finite element method (FEM) - boundary element method (BEM) is used to predict the performance of structural-acoustic problem, i.e. the frequency response analysis, modal analysis. The accuracy of conventional FEM/BEM for structural-acoustic problems strongly depends on the size of the mesh, element quality, etc. As element size gets greater and distortion gets severer, the deviation of high frequency problem is also clear. In order to improve the accuracy of structural-acoustic problem, a smoothed finite-element/boundary-element coupling procedure (SFEM/BEM) is extended

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22

Buczkowski, Daniel, Szymon Zymelka, and Grzegorz Nowak. "Experimental and Numerical Studies on the Development of Hysteresis in a Shock Absorber with a Shim Disc Valve." International Journal of Automotive and Mechanical Engineering 19, no. 2 (2022): 9747–58. http://dx.doi.org/10.15282/ijame.19.2.2022.10.0752.

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The paper describes the observed occurrence of hysteresis of the characteristic curve of a shock absorber valve. The phenomenon has an impact on the asymmetry of the damping force characteristic and should be taken into account when modelling the valve operation. The aim of the investigations was to determine the factors generating the phenomenon and establish the relationships between these factors and the hysteresis size. Tests were carried out on a stand intended for valve measurements in isolated conditions. A strongly coupled Fluid-Structure Interaction numerical model was also created to

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23

Banihashemi, Saeideh, James T. Kirby, Fengyan Shi, and Zhifei Dong. "WAVES AND STRONGLY SHEARED CURRENTS: EXTENSIONS TO COASTAL OCEAN MODELS." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 40. http://dx.doi.org/10.9753/icce.v36.currents.40.

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Significant progress has been made in the numerical modeling of wave-current interaction during the past decade. Typical coastal circulation and wave models, however, still only employ theoretical formulations which take depth-uniform mean flows into account, with realistic, non-uniform flows treated as being depth uniform through some chosen averaging procedure. Depending on the choice of average over depth, significant errors may arise in the estimation of properties such as group velocity and action density in realistic conditions. These errors, in turn, are fed back into the circulation mo

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24

Shi, Wenhao, and Tianhong Yang. "A Coupled Nonlinear Flow Model for Particle Migration and Seepage Properties of Water Inrush through Broken Rock Mass." Geofluids 2020 (September 9, 2020): 1–14. http://dx.doi.org/10.1155/2020/1230542.

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A large number of statistics indicate that broken rock mass always transforms into a flowing channel and leads to water inrush disasters in mining engineering, such as fault, karst, and strongly weathered rock mass. During the process of water inrush, the structure of the broken rock mass is constantly changing due to seepage erosion under high-velocity flow. Therefore, it is of vital importance to quantitatively evaluate the flow behavior of the water inrush related to the seepage erosion in order to prevent or reduce the risks. This study described a coupled nonlinear flow model, which coupl

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25

Sváček, P., and J. Horáček. "Numerical Simulation of Glottal Flow in Interaction with Self Oscillating Vocal Folds: Comparison of Finite Element Approximation with a Simplified Model." Communications in Computational Physics 12, no. 3 (2012): 789–806. http://dx.doi.org/10.4208/cicp.011010.280611s.

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AbstractIn this paper the numerical method for solution of an aeroelastic model describing the interactions of air flow with vocal folds is described. The flow is modelled by the incompressible Navier-Stokes equations spatially discretized with the aid of the stabilized finite element method. The motion of the computational domain is treated with the aid of the Arbitrary Lagrangian Eulerian method. The structure dynamics is replaced by a mechanically equivalent system with the two degrees of freedom governed by a system of ordinary differential equations and discretized in time with the aid of

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26

Bahrami, Saeed, and Mahmood Norouzi. "Hemodynamic impacts of hematocrit level by two-way coupled FSI in the left coronary bifurcation." Clinical Hemorheology and Microcirculation 76, no. 1 (2020): 9–26. http://dx.doi.org/10.3233/ch-200854.

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Cardiovascular disease is now under the influence of several factors that encourage researchers to investigate the flow of these vessels. Oscillation influences the blood circulation in the volume of red blood cells (RBC) strongly. Therefore, in this study, its effects have been considered on hemodynamic parameters in the elastic wall and coronary bifurcation. In this study, a 3D geometry of non-Newtonian and pulsatile blood circulation is considered in the left coronary artery bifurcation. The Casson model with various hematocrits is analyzed in elastic and rigid walls. The wall shear stress

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27

COOPER, A. J., and PETER W. CARPENTER. "The stability of rotating-disc boundary-layer flow over a compliant wall. Part 1. Type I and II instabilities." Journal of Fluid Mechanics 350 (November 10, 1997): 231–59. http://dx.doi.org/10.1017/s0022112097006976.

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A theoretical study into the effects of wall compliance on the stability of the rotating-disc boundary layer is described. A single-layer viscoelastic wall model is coupled to a sixth-order system of fluid stability equations which take into account the effects of viscosity, Coriolis acceleration, and streamline curvature. The coupled system of equations is integrated numerically by a spectral Chebyshev-tau technique.Travelling and stationary modes are studied and wall compliance is found to greatly increase the complexity of the eigenmode spectrum. It is effective in stabilizing the inviscid

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28

Zhang, Liping, and Thomas L. Delworth. "Analysis of the Characteristics and Mechanisms of the Pacific Decadal Oscillation in a Suite of Coupled Models from the Geophysical Fluid Dynamics Laboratory." Journal of Climate 28, no. 19 (2015): 7678–701. http://dx.doi.org/10.1175/jcli-d-14-00647.1.

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Abstract North Pacific decadal oceanic and atmospheric variability is examined in a suite of coupled climate models developed at the Geophysical Fluid Dynamics Laboratory (GFDL). The models have ocean horizontal resolutions ranging from 1° to 0.1° and atmospheric horizontal resolutions ranging from 200 to 50 km. In all simulations the dominant pattern of decadal-scale sea surface temperature (SST) variability over the North Pacific is similar to the observed Pacific decadal oscillation (PDO). Simulated SST anomalies in the Kuroshio–Oyashio Extension (KOE) region exhibit a significant spectral

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29

Zhang, Hai Tao, Hiromi Nagaum, Yu Bo Zuo, and Jian Zhong Cui. "Coupled Modeling of Electromagnetic Field, Fluid Flow, Heat Transfer and Solidification during Conventional DC Casting and Low Frequency Electromagnetic Casting of 7XXX Aluminum Alloys." Advanced Materials Research 15-17 (February 2006): 18–23. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.18.

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A comprehensive mathematical model has been developed to describe the interaction of the multiple physics fields during the conventional DC casting and LFEC (low frequency electromagnetic casting) process. The model is based on a combination of the commercial finite element package ANSYS and the commercial finite volume package FLUENT, with the former for the calculation of the electromagnetic field and the latter for the calculation of the magnetic driven fluid flow, heat transfer and solidification. Moreover, the model has been verified against the temperature measurements obtained from two

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30

Ritschel, Thomas, Lutz Zülicke, and Philip J. Kuntz. "Cationic Van-der-Waals Complexes: Theoretical Study of Ar2H+ Structure and Stability." Zeitschrift für Physikalische Chemie 218, no. 4 (2004): 377–90. http://dx.doi.org/10.1524/zpch.218.4.377.29196.

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AbstractThe electronic and geometric structure, stability and molecular properties of the cationic van-der-Waals complex Ar2H+ in its ground electronic state are studied by means of two ab-initio quantum-chemical approaches: conventional configuration interaction (multi-reference and coupled-cluster methods) and a diatomics-in-molecules model with ab-initio input data. To ensure consistency between the two approaches, one and the same one-electron atomic basis set (aug-cc-pVTZ by Dunning) is employed in both. The topography of the ground-state potential-energy surface is examined with respect

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31

Westcott, Gregory, Annette R. Grilli, Stephan Grilli, James T. Kirby, and Fengyan Shi. "INDIVIDUAL WAVE EFFECTS ON COASTAL STRUCTURE DAMAGE DURING WINDSTORMS." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 14. http://dx.doi.org/10.9753/icce.v36.structures.14.

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In hazard assessment studies that evaluate the damage caused to coastal structures by windstorm-generated surge and waves, the standard approach has been to estimate structural loading by applying phase-averaged wave propagation models (e.g., SWAN, STWAVE) and storm surge models (e.g., ADCIRC), coupled or not with each other. Bare-earth â€œDigital Elevation Modelsâ€ (DEMs) have typically been used as a basis for model grid development, with sometimes empirical adjustments being made to beach profiles or dune crest levels to account for storm-induced erosion. In recent work, the latter approac

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32

Holley, David C., and Michael P. Kavanaugh. "Interactions of alkali cations with glutamate transporters." Philosophical Transactions of the Royal Society B: Biological Sciences 364, no. 1514 (2008): 155–61. http://dx.doi.org/10.1098/rstb.2008.0246.

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The transport of glutamate is coupled to the co-transport of three Na + ions and the countertransport of one K + ion. In addition to this carrier-type exchange behaviour, glutamate transporters also behave as chloride channels. The chloride channel activity is strongly influenced by the cations that are involved in coupled flux, making glutamate transporters representative of the ambiguous interface between carriers and channels. In this paper, we review the interaction of alkali cations with glutamate transporters in terms of these diverse functions. We also present a model derived from elect

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33

Gautam, Manjeet Singh, Hitender Khatri, and K. Vinod. "Interplay of neutron transfer and collective degrees of freedom in the fusion dynamics of 16O +76Ge and 18O +74Ge reactions." International Journal of Modern Physics E 28, no. 01n02 (2019): 1950006. http://dx.doi.org/10.1142/s021830131950006x.

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This work examined the fusion dynamics of [Formula: see text] and [Formula: see text] reactions within the framework of the static Woods–Saxon potential model, the energy dependent Woods–Saxon potential (EDWSP) model and coupled channel formulation. The effects of inelastic surface excitations, static deformation of colliding pairs and /or neutron transfer channels on fusion process are investigated through the coupled channel method. The calculations based upon static Woods–Saxon potential in conjunction with one-dimensional Wong formula strongly under predict the fusion data of [Formula: see

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34

Andronikos, Theologos, George Papadakis, Vasilis Riziotis, and Spyros Voutsinas. "Revising of the Near Ground Helicopter Hover: The Effect of Ground Boundary Layer Development." Applied Sciences 11, no. 21 (2021): 9935. http://dx.doi.org/10.3390/app11219935.

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The interaction of a helicopter rotor with the ground in hover flight is addressed numerically using a hybrid Eulerian–Lagrangian CFD model. When a helicopter takes off or lands, its wake interferes with the ground. This interaction, depending on the height-to-rotor diameter ratio, causes the altering of the rotor loading and performance as compared to the unconstrained case and gives rise to the development of a complex outwash flow field in the surrounding of the helicopter. The present study aims to characterize the interactional phenomena occurring in the early stages of the rotor wake dev

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35

Ghosh, Purusottam, Partha Konar, Abhijit Kumar Saha, and Sudipta Show. "Self-interacting freeze-in dark matter in a singlet doublet scenario." Journal of Cosmology and Astroparticle Physics 2022, no. 10 (2022): 017. http://dx.doi.org/10.1088/1475-7516/2022/10/017.

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Abstract We examine the non-thermal production of dark matter in a scalar extended singlet doublet fermion model where the lightest admixture of the fermions constitutes a suitable dark matter candidate. The dark sector is non-minimal with the MeV scale singlet scalar, which is stable in the Universe lifetime and can mediate the self-interaction for the multi-GeV fermion dark matter mitigating the small scale structure anomalies of the Universe. If the dark sector is strongly coupled to yield a velocity dependent large self-interaction cross section, it undergoes internal dark thermal equilibr

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36

Tang, Jizhou, Kan Wu, Lihua Zuo, Lizhi Xiao, Sijie Sun, and Christine Ehlig–Economides. "Investigation of Rupture and Slip Mechanisms of Hydraulic Fractures in Multiple-Layered Formations." SPE Journal 24, no. 05 (2019): 2292–307. http://dx.doi.org/10.2118/197054-pa.

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Summary Weak bedding planes (BPs) that exist in many tight oil formations and shale–gas formations might strongly affect fracture–height growth during hydraulic–fracturing treatment. Few of the hydraulic–fracture–propagation models developed for unconventional reservoirs are capable of quantitatively estimating the fracture–height containment or predicting the fracture geometry under the influence of multiple BPs. In this paper, we introduce a coupled 3D hydraulic–fracture–propagation model considering the effects of BPs. In this model, a fully 3D displacement–discontinuity method (3D DDM) is

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Traverso, Sonia, Laura Elia, and Michael Pusch. "Gating Competence of Constitutively Open CLC-0 Mutants Revealed by the Interaction with a Small Organic Inhibitor." Journal of General Physiology 122, no. 3 (2003): 295–306. http://dx.doi.org/10.1085/jgp.200308784.

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Opening of CLC chloride channels is coupled to the translocation of the permeant anion. From the recent structure determination of bacterial CLC proteins in the closed and open configuration, a glutamate residue was hypothesized to form part of the Cl−-sensitive gate. The negatively charged side-chain of the glutamate was suggested to occlude the permeation pathway in the closed state, while opening of a single protopore of the double-pore channel would reflect mainly a movement of this side-chain toward the extracellular pore vestibule, with little rearrangement of the rest of the channel. He

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Weng, Xiaowei, Dimitry Chuprakov, Olga Kresse, Romain Prioul, and Haotian Wang. "Hydraulic fracture-height containment by permeable weak bedding interfaces." GEOPHYSICS 83, no. 3 (2018): MR137—MR152. http://dx.doi.org/10.1190/geo2017-0048.1.

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In laminated formations, the vertical height growth of a hydraulic fracture can be strongly influenced by the interaction of the fracture tip with the bedding interfaces it crosses. A weak interface may fail in shear and then slip, depending on the strength and frictional properties, the effective vertical stress at the interface, and the net pressure. Shear failure and slippage at the interface can retard the height growth or even stop it completely. A 2D analytical model called the FracT model has been developed that examines the shear slippage along the bedding interface adjacent to the fra

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HAZEL, ANDREW L., and MATTHIAS HEIL. "Three-dimensional airway reopening: the steady propagation of a semi-infinite bubble into a buckled elastic tube." Journal of Fluid Mechanics 478 (March 10, 2003): 47–70. http://dx.doi.org/10.1017/s0022112002003452.

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We consider the steady propagation of an air finger into a buckled elastic tube initially filled with viscous fluid. This study is motivated by the physiological problem of pulmonary airway reopening. The system is modelled using geometrically nonlinear Kirchhoff–Love shell theory coupled to the free-surface Stokes equations. The resulting three-dimensional fluid–structure-interaction problem is solved numerically by a fully coupled finite element method.The system is governed by three dimensionless parameters: (i) the capillary number, Ca=μU/σ*, represents the ratio of viscous to surface-tens

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Shakurova, Liia A., and Elena V. Kustova. "Boundary conditions for fluid-dynamic parameters of a single-component gas flow with vibrational deactivation on a solid wall." Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy 9, no. 2 (2022): 366–77. http://dx.doi.org/10.21638/spbu01.2022.216.

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Boundary conditions for fluid-dynamic parameters of a strongly non-equilibrium singlecomponent rarefied gas flow in the slip regime are obtained using kinetic-theory methods. The gas flow is described in the frame of the state-to-state approach assuming vibrational energy exchange as the slow relaxation process. The set of governing equations including conservation equations coupled with additional relaxation equations for vibrational state populations is presented. The gas-solid surface interaction is considered on the basis of the specular-diffusive model, and possible vibrational deactivati

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Habchi, Charbel, Serge Russeil, Daniel Bougeard, et al. "Partitioned solver for strongly coupled fluid–structure interaction." Computers & Fluids 71 (January 2013): 306–19. http://dx.doi.org/10.1016/j.compfluid.2012.11.004.

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Wagner, T., and N. J. Cook. "Late-orogenic alpine-type (apatite)-quartz fissure vein mineralization in the Rheinisches Schiefergebirge, NW Germany: mineralogy, formation conditions and lateral-secretionary origin." Mineralogical Magazine 64, no. 3 (2000): 539–60. http://dx.doi.org/10.1180/002646100549418.

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AbstractMineralogical, geochemical and fluid inclusion investigations of a representative suite of fissure vein mineralizations in the Rheinisches Schiefergebirge, NW Germany indicate a link to the latest stage of the Variscan orogenic evolution. Model P-T-conditions during initiation of fibrous fissure vein quartz growth are in the range 370–420°C at 0.2–0.7 kbar. The dataset suggests significant fluid cooling during evolution of the vein systems. Minimum temperatures at the end of fibrous quartz growth lie in the range 140–190°C, with conductive heat transfer and heat consumption during inte

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Valencia, Juan D., Juan M. Mejía, Matteo Icardi, and Richard Zabala. "Mathematical Modeling and Pilot Test Validation of Nanoparticles Injection in Heavy Hydrocarbon Reservoirs." Fluids 7, no. 4 (2022): 135. http://dx.doi.org/10.3390/fluids7040135.

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Heavy-oil mobility in reservoir rocks can be improved, using nanotechnology, by reducing the viscosity of the oil and improving the rock wettability to a water-wet condition. Previous pilot studies in Colombian heavy oil fields reported that nanoparticles dispersed in an oleic carrier fluid (diesel) increased oil production rates between 120–150% higher than before the interventions. However, to optimally deploy a massive nanofluid intervention campaign in heavy oil fields, it is valuable to implement simulation tools that can help to understand the role of operational parameters, to design th

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Beston, N. B. "RESERVOIR GEOLOGICAL MODELLING OF THE NORTH RANKIN FIELD, NORTHWEST AUSTRALIA." APPEA Journal 26, no. 1 (1986): 375. http://dx.doi.org/10.1071/aj85032.

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The North Rankin Field off northwestern Australia provides the major part of the gas reserves for the North West Shelf Project, one of the largest and most ambitious natural resource developments yet undertaken in Australia. Detailed reservoir geological modelling coupled with a three dimensional reservoir simulator have strongly enhanced development planning of the field.The North Rankin structure is a large horst feature of Upper Triassic to Lower Jurassic fluvial and marginal marine sediments unconformably overlain by Cretaceous claystones and marls. The sequence is comprised of braided str

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Ibrahim, M. Y., C. Cook, and K. Tieu. "Dynamic behaviour of a SCARA robot with links subjected to different velocity trajectories." Robotica 6, no. 2 (1988): 115–21. http://dx.doi.org/10.1017/s0263574700003921.

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SUMMARYThe dynamics of a mechanical manipulator have the inherent characteristics of being highly non-linear and strongly coupled due to the interaction of the inertial, centripetal, coriolis and gravitational forces.These characteristics produce difficulties in predicting the dynamic behaviour of a given manipulator's structure. These interactive forces depend largely on the geometrical configuration and operational conditions of a manipulator. Therefore, it is essential to investigate the dynamics behaviour under different conditions in order to obtain an optimal design.This paper presents a

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Doulcet, Benjamin, Christophe Devals, Bernd Nennemann, Maxime Gauthier, François Guibault, and Jean-Yves Trépanier. "Two-way strongly coupled fluid-structure interaction simulations with OpenFOAM." IOP Conference Series: Earth and Environmental Science 405 (December 19, 2019): 012007. http://dx.doi.org/10.1088/1755-1315/405/1/012007.

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Sudhakar, Y., and Wolfgang A. Wall. "A strongly coupled partitioned approach for fluid-structure-fracture interaction." International Journal for Numerical Methods in Fluids 87, no. 2 (2018): 90–108. http://dx.doi.org/10.1002/fld.4483.

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Zhang, Xuehui, and Wout Broere. "Monitoring of Tidal Variation and Temperature Change-Induced Movements of an Immersed Tunnel Using Distributed Optical Fiber Sensors (DOFSs)." Structural Control and Health Monitoring 2023 (July 12, 2023): 1–17. http://dx.doi.org/10.1155/2023/2419495.

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The short-term deformation behavior of immersed tunnels due to daily or monthly temperature changes and tidal variations is often not monitored but forms important input for a structural health assessment of the tunnel. In this study, distributed optical fiber sensors (DOFSs) are used to monitor the short-term (daily and monthly) deformation behavior of an immersed tunnel. Joint opening and the relative settlement differences between tunnel elements are monitored simultaneously at subhour intervals. Measurements show that the variation in the joint opening is strongly correlated with temperatu

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Matthies, Hermann G., and Jan Steindorf. "Partitioned but strongly coupled iteration schemes for nonlinear fluid–structure interaction." Computers & Structures 80, no. 27-30 (2002): 1991–99. http://dx.doi.org/10.1016/s0045-7949(02)00259-6.

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WASHIO, Takumi, and Toshiaki HISADA. "Flexible Preconditioning for Strongly Coupled Equations in Fluid-Structure Interaction Problems." Proceedings of The Computational Mechanics Conference 2003.16 (2003): 87–88. http://dx.doi.org/10.1299/jsmecmd.2003.16.87.

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