Relevant bibliographies by topics / Convection

Academic literature on the topic 'Convection'

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Published: 4 June 2021
Last updated: 31 July 2024

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Journal articles on the topic "Convection"

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Zhang, Nan, Yan Wang, and Xiaomeng Lin. "Mesoscale Observational Analysis of Isolated Convection Associated with the Interaction of the Sea Breeze Front and the Gust Front in the Context of the Urban Heat Humid Island Effect." Atmosphere 13, no. 4 (April 9, 2022): 603. http://dx.doi.org/10.3390/atmos13040603.

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An isolated convection was unexpectedly initiated in the evening of 1 August 2019 around the Tianjin urban region (TUR), which happened at some distance from the shear line at lower level and the preexisting convection to the South, analyzed by using ERA5 reanalysis data and observations from surface weather stations, and a S-band radar. The results show that, 42 min before the initiation of the convection, the atmospheric thermodynamic conditions around TUR were favorable for the initiation of the isolated convection, although the southerly and vertical shear of the horizontal wind at the lower level was weak. A sea-breeze front approached the TUR and continued to move West, leading to the triggering of the isolated convection in the context of the urban humid heat island (UHHI) effect. Subsequently, the gust front, which was formed between the cold pool away from the TUR and the warm and humid air of the UHHI, moved northward, approached the convection, and collided with sea breeze front, resulting in five reflectivity centers of isolated convection being merged and the convection’s development. Finally, the isolated convection split into two convections that moved away from the TUR and disappeared at 20:36 Beijing Time. The isolated convection was initiated and developed by the interaction of the sea breeze front and gust front in the context of the UHHI effect. The sea breeze front triggered the isolated convection around TUR in the context of the UHHI effect, and the gust front produced by the early convective storms to the south played a vital role in the development of the isolated convection.
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Folkins, Ian, S. Fueglistaler, G. Lesins, and T. Mitovski. "A Low-Level Circulation in the Tropics." Journal of the Atmospheric Sciences 65, no. 3 (March 1, 2008): 1019–34. http://dx.doi.org/10.1175/2007jas2463.1.

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Abstract Deep convective tropical systems are strongly convergent in the midtroposphere. Horizontal wind measurements from a variety of rawinsonde arrays in the equatorial Pacific and Caribbean are used to calculate the mean dynamical divergence profiles of large-scale arrays (≥1000 km in diameter) in actively convecting regions. Somewhat surprisingly, the magnitude of the midtropospheric divergence calculated from these arrays is usually small. In principle, the midlevel convergence of deep convective systems could be balanced on larger scales either by a vertical variation in the radiative mass flux of the background clear sky atmosphere, or by a divergence from shallow cumuli. The vertical variation of the clear sky mass flux in the midtroposphere is small, however, so that the offsetting divergence must be supplied by shallow cumuli. On spatial scales of ∼1000 km, the midlevel convergent inflow toward deep convection appears to be internally compensated, or “screened,” by a divergent outflow from surrounding precipitating shallow convection. Deep convective systems do not induce a large-scale inflow of midlevel air toward actively convecting regions from the rest of the tropics, but instead help generate a secondary low-level circulation, in which the net downward mass flux from mesoscale and convective-scale downdrafts is balanced by a net upward mass flux from precipitating shallow cumuli. The existence of this circulation is consistent with observational evidence showing that deep and shallow convection are spatiotemporally coupled on a wide range of both spatial and temporal scales. One of the mechanisms proposed for coupling shallow convection to deep convection is the tendency for deep convection to cool the lower troposphere. The authors use radiosonde temperature profiles and the Tropical Rainfall Measuring Mission (TRMM) 3B42 gridded rainfall product to argue that the distance over which deep convection cools the lower troposphere is approximately 1000 km.
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Romps, David M., and Zhiming Kuang. "A Transilient Matrix for Moist Convection." Journal of the Atmospheric Sciences 68, no. 9 (September 1, 2011): 2009–25. http://dx.doi.org/10.1175/2011jas3712.1.

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Abstract A method is introduced for diagnosing a transilient matrix for moist convection. This transilient matrix quantifies the nonlocal transport of air by convective eddies: for every height z, it gives the distribution of starting heights z′ for the eddies that arrive at z. In a cloud-resolving simulation of deep convection, the transilient matrix shows that two-thirds of the subcloud air convecting into the free troposphere originates from within 100 m of the surface. This finding clarifies which initial height to use when calculating convective available potential energy from soundings of the tropical troposphere.
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Wang, Yin, Pik-Yin Lai, Hao Song, and Penger Tong. "Mechanism of large-scale flow reversals in turbulent thermal convection." Science Advances 4, no. 11 (November 2018): eaat7480. http://dx.doi.org/10.1126/sciadv.aat7480.

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It is commonly believed that heat flux passing through a closed thermal convection system is balanced so that the convection system can remain at a steady state. Here, we report a new kind of convective instability for turbulent thermal convection, in which the convective flow stays over a long steady “quiet period” having a minute amount of heat accumulation in the convection cell, followed by a short and intermittent “active period” with a massive eruption of thermal plumes to release the accumulated heat. The rare massive eruption of thermal plumes disrupts the existing large-scale circulation across the cell and resets its rotational direction. A careful analysis reveals that the distribution of the plume eruption amplitude follows the generalized extreme value statistics with an upper bound, which changes with the fluid properties of the convecting medium. The experimental findings have important implications to many closed convection systems of geophysical scale, in which massive eruptions and sudden changes in large-scale flow pattern are often observed.
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Pertiwi, Nada Aulia, Hendi Rohendi, and Setiawan Setiawan. "Penyusunan Model Laporan Keuangan Entitas Mikro Kecil Menengah Berdasarkan SAK EMKM pada EMKM Konveksi." Jurnal Accounting Information System (AIMS) 3, no. 1 (April 20, 2020): 36–50. http://dx.doi.org/10.32627/aims.v3i1.334.

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This study aims to know the knowledge of EMKM Convections jeans in Soreang District regarding SAK EMKM, to find out the financial records carried out by EMKM, and to compile a model of EMKM Convection’s financial statements that are under SAK EMKM. In data collection, used snowball sampling and data analysis techniques are carried out through the stages of data reduction, evaluating EMKM’s knowledge of SAK EMKM, evaluating the suitability of the records carried out by EMKM Convection with applicable standards, namely SAK EMKM, seeing the similarity of activities contained in EMKM convection to create a model suitable for all EMKM convection and compile a model of financial statements for EMKM Convections following SAK EMKM. The results showed that the EMKM Convections in Soreang District still did not know about the existence of SAK EMKM, EMKM actors also still did a simple recording, there was no further record up to the preparation of financial statements. Besides, this study also produced a financial statement model for EMKM convections that were by the SAK EMKM.
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Neggers, Roel A. J., J. David Neelin, and Bjorn Stevens. "Impact Mechanisms of Shallow Cumulus Convection on Tropical Climate Dynamics*." Journal of Climate 20, no. 11 (June 1, 2007): 2623–42. http://dx.doi.org/10.1175/jcli4079.1.

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Abstract Subtropical shallow cumulus convection is shown to play an important role in tropical climate dynamics, in which convective mixing between the atmospheric boundary layer and the free troposphere initiates a chain of large-scale feedbacks. It is found that the presence of shallow convection in the subtropics helps set the width and intensity of oceanic ITCZs, a mechanism here termed the shallow cumulus humidity throttle because of the control exerted on the moisture supply to the deep convection zones. These conclusions are reached after investigations based on a tropical climate model of intermediate complexity, with sufficient vertical degrees of freedom to capture (i) the effects of shallow convection on the boundary layer moisture budget and (ii) the dependency of deep convection on the free-tropospheric humidity. An explicit shallow cumulus mixing time scale in this simple parameterization is varied to assess sensitivity, with moist static energy budget analysis aiding to identify how the local effect of shallow convection is balanced globally. A reduction in the mixing efficiency of shallow convection leads to a more humid atmospheric mixed layer, and less surface evaporation, with a drier free troposphere outside of the convecting zones. Advection of drier free-tropospheric air from the subtropics by transients such as dry intrusions, as well as by mean inflow, causes a substantial narrowing of the convection zones by inhibition of deep convection at their margins. In the tropical mean, the reduction of convection by this narrowing more than compensates for the reduction in surface evaporation. Balance is established via a substantial decrease in tropospheric temperatures throughout the Tropics, associated with the reduction in convective heating. The temperature response—and associated radiative contribution to the net flux into the column—have broad spatial scales, while the reduction of surface evaporation is concentrated outside of the convecting zones. This results in differential net flux across the convecting zone, in a sense that acts to destabilize those areas that do convect. This results in stronger large-scale convergence and more intense convection within a narrower area. Finally, mixed layer ocean experiments show that in a coupled ocean–atmosphere system this indirect feedback mechanism can lead to SST differences up to +2 K between cases with different shallow cumulus mixing time, tending to counteract the direct radiative impact of low subtropical clouds on SST.
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Bouffard, Damien, and Alfred Wüest. "Convection in Lakes." Annual Review of Fluid Mechanics 51, no. 1 (January 5, 2019): 189–215. http://dx.doi.org/10.1146/annurev-fluid-010518-040506.

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Lakes and other confined water bodies are not exposed to tides, and their wind forcing is usually much weaker compared to ocean basins and estuaries. Hence, convective processes are often the dominant drivers for shaping mixing and stratification structures in inland waters. Due to the diverse environments of lakes—defined by local morphological, geochemical, and meteorological conditions, among others—a fascinating variety of convective processes can develop with remarkably unique signatures. Whereas the classical cooling-induced and shear-induced convections are well-known phenomena due to their dominant roles in ocean basins, other convective processes are specific to lakes and often overlooked, for example, sidearm, under-ice, and double-diffusive convection or thermobaric instability and bioconvection. Additionally, the peculiar properties of the density function at low salinities/temperatures leave distinctive traces. In this review, we present these various processes and connect observations with theories and model results.
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Zhao, N., X. Y. Shen, Y. H. Ding, and M. Takahashi. "A possible theory for the interaction between convective activities and vortical flows." Nonlinear Processes in Geophysics 18, no. 5 (October 31, 2011): 779–89. http://dx.doi.org/10.5194/npg-18-779-2011.

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Abstract. Theoretical studies usually attribute convections to the developments of instabilities such as the static or symmetric instabilities of the basic flows. However, the following three facts make the validities of these basic theories unconvincing. First, it seems that in most cases the basic flow with balance property cannot exist as the exact solution, so one cannot formulate appropriate problems of stability. Second, neither linear nor nonlinear theories of dynamical instability are able to describe a two-way interaction between convection and its background, because the basic state which must be an exact solution of the nonlinear equations of motion is prescribed in these issues. And third, the dynamical instability needs some extra initial disturbance to trigger it, which is usually another point of uncertainty. The present study suggests that convective activities can be recognized in the perspective of the interaction of convection with vortical flow. It is demonstrated that convective activities can be regarded as the superposition of free modes of convection and the response to the forcing induced by the imbalance of the unstably stratified vortical flow. An imbalanced vortical flow provides not only an initial condition from which unstable free modes of convection can develop but also a forcing on the convection. So, convection is more appropriately to be regarded as a spontaneous phenomenon rather than a disturbance-triggered phenomenon which is indicated by any theory of dynamical instability. Meanwhile, convection, particularly the forced part, has also a reaction on the basic flow by preventing the imbalance of the vortical flow from further increase and maintaining an approximately balanced flow.
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Fuentes, J. R., Andrew Cumming, Matias Castro-Tapia, and Evan H. Anders. "Heat Transport and Convective Velocities in Compositionally Driven Convection in Neutron Star and White Dwarf Interiors." Astrophysical Journal 950, no. 1 (June 1, 2023): 73. http://dx.doi.org/10.3847/1538-4357/accb56.

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Abstract We investigate heat transport associated with compositionally driven convection driven by crystallization at the ocean–crust interface in accreting neutron stars, or growth of the solid core in cooling white dwarfs. We study the effect of thermal diffusion and rapid rotation on the convective heat transport, using both mixing length theory and numerical simulations of Boussinesq convection. We determine the heat flux, composition gradient, and Péclet number, Pe (the ratio of thermal diffusion time to convective turnover time) as a function of the composition flux. We find two regimes of convection with a rapid transition between them as the composition flux increases. At small Pe, the ratio between the heat flux and composition flux is independent of Pe, because the loss of heat from convecting fluid elements due to thermal diffusion is offset by the smaller composition gradient needed to overcome the reduced thermal buoyancy. At large Pe, the temperature gradient approaches the adiabatic gradient, saturating the heat flux. We discuss the implications for cooling of neutron stars and white dwarfs. Convection in neutron stars spans both regimes. We find rapid mixing of neutron star oceans, with a convective turnover time of the order of weeks to minutes depending on rotation. Except during the early stages of core crystallization, white dwarf convection is in the thermal-diffusion-dominated fingering regime. We find convective velocities much smaller than recent estimates for crystallization-driven dynamos. The small fraction of energy carried as kinetic energy calls into question the effectiveness of crystallization-driven dynamos as an explanation for observed magnetic fields in white dwarfs.
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Ma, Nancy, John Walker, David Bliss, and George Bryant. "Forced Convection During Liquid Encapsulated Crystal Growth With an Axial Magnetic Field." Journal of Fluids Engineering 120, no. 4 (December 1, 1998): 844–50. http://dx.doi.org/10.1115/1.2820749.

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This paper treats the forced convection, which is produced by the rotation of the crystal about its vertical centerline during the liquid-encapsulated Czochralski or Kyropoulos growth of compound semiconductor crystals, with a uniform vertical magnetic field. The model assumes that the magnetic field strength is sufficiently large that convective heat transfer and all inertial effects except the centripetal acceleration are negligible. With the liquid encapsulant in the radial gap between the outside surface of the crystal and the vertical wall of the crucible, the forced convection is fundamentally different from that with a free surface between the crystal and crucible for the Czochralski growth of silicon crystals. Again unlike the case for silicon growth, the forced convection for the actual nonzero electrical conductivity of an indium-phosphide crystal is virtually identical to that for an electrically insulating crystal. The electromagnetic damping of the forced convection is stronger than that of the buoyant convection. In order to maintain a given balance between the forced and buoyant convections, the angular velocity of the crystal must be increased as the magnetic field strength is increased.
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Dissertations / Theses on the topic "Convection"

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Stich, Dennis. "Convection initiation." Diss., Ludwig-Maximilians-Universität München, 2013. http://nbn-resolving.de/urn:nbn:de:bvb:19-157194.

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Clark, Adam James. "Predictability associated with convection-allowing and convection-parameterizing forecasts." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3380372.

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Colin, Maxime. "Convective memory, and the role of cold pools." Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS312.

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Les paramétrisations représentent encore mal la variabilité spatio-temporelle de la convection. Cela peut provenir du fait qu’elles supposent que la convection peut être diagnostiquée à partir des conditions de grande échelle. La mémoire de la convection, traduisant la dépendance de la convection en sa propre histoire, pourrait permettre de résoudre ce problème. Cette thèse propose de distinguer la mémoire micro-état (non résolue) et la mémoire macro-état (de grande échelle). On a recours à un modèle résolvant les nuages, un Modèle de Circulation Générale (GCM) en 1D et en 3D, et un modèle simple proie-prédateur. Ils sont placés soit en Equilibre Radiatif-Convectif soit en condition de macro-état fixé, et on analyse leur réponse à des perturbations d'homogénéisation. La mémoire de la convection est de l’ordre d’une heure à un jour. Elle apparaît fortement liée à l'organisation convective dans l'espace. La mémoire du micro-état est essentiellement stockée dans les structures micro-état de couche-limite de la vapeur d'eau et de la température, la mémoire de la vapeur d'eau étant dominante. De plus, le micro-état convectif est intrinsèquement instable, ce qui confirme que la connaissance de l'état de grande échelle n'est pas suffisante pour prédire la convection. On montre ensuite que le GCM de référence a déjà des formes encourageantes de mémoire. Une modification simple du GCM rend les poches froides moins froides et ainsi moins aptes à déclencher la convection. La pluie du GCM modifié devient ainsi plus intermittente, résolvant un biais typique des modèles. Cette étude promeut l'introduction de variables pronostiques dans les GCMs pour représenter la mémoire du micro-état
Convective parameterizations struggle to represent the spatiotemporal variability of convection. This may be because they assume that convection can be diagnosed from the large-scale state, without knowing the convective history. The concept of convective memory, which states that convection depends on its own history, could help overcome this issue. A new framework suggests a distinction between microstate (unresolved) memory and macrostate (large-scale) memory. Using a hierarchy of models either in Radiative-Convective Equilibrium or under fixed-macrostate conditions, the thesis analyses the recovery to homogenisation perturbations. It exploits a Cloud-Resolving Model, a General Circulation Model (GCM) in 1D and in 3D, and a simple predator-prey model. The results show that convective memory plays a role on time scales of up to a day. Convective memory in time is dramatically enhanced by convective organisation in space. Microstate memory is found to be mostly stored in boundary layer microstate structures of water vapour and temperature, with a dominant water vapour memory. Furthermore, the convective microstate is shown to be inherently unstable, which confirms that knowledge of the macrostate conditions is not sufficient to predict convection. The standard version of the GCM already shows a reasonable level of convective persistence. A simple modification of the GCM convection scheme, meant to improve cold pools over oceans, makes cold pools less cold and thus weaker to trigger convection. This leads to more intermittent precipitation, partly correcting a typical GCM bias. Overall the thesis fosters introducing prognostic variables into GCMs and suggests ways to do it
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Berg, Niclas, Gustav Johansson, and Maja Sandberg. "Rayleigh-Bénard convection." Thesis, KTH, Mekanik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105486.

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This report considers Rayleigh-Bénard convection, i.e. the 　ow between two large parallel plates where the lower one is heated. The change in density due to temperature variations gives rise to a 　ow generated by buoyancy. This motion is opposed by the viscous forces in the 　uid. The balance between these forces determines whether the 　ow is stable or not and the goal of this report is to nd a condition giving this limit as well as analyzing other aspects of the 　ow. The starting point of the analysis is the incompressible Navier- Stokes equations and the thermal energy equation upon which the Boussinesq approximation is applied. Using linear stability analysis a condition for the stability is obtained depending solely on a nondimensional parameter, called the Rayleigh number, for a given wavenumber k . This result is conrmed to be accurate after comparison with numerical simulations using a spectral technique. Further non-linear two- and three-dimensional simulations are also performed to analyze dierent aspects of the 　ow for various values of the Rayleigh number.

Examensarbete inom teknisk fysik, grundnivå

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Leppinen, David Michael. "Aspects of convection." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627366.

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Ramesh, Chandra D. S. "Turbulent Mixed Convection." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/236.

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Turbulent mixed convection is a complicated flow where the buoyancy and shear forces compete with each other in affecting the flow dynamics. This thesis deals with the near wall dynamics in a turbulent mixed convection flow over an isothermal horizontal heated plate. We distinguish between two types of mixed convection ; low-speed mixed convection (LSM) and high-speed mixed convection (HSM). In LSM the entire boundary layer, including the near-wall region, is dominated by buoyancy; in HSM the near-wall region, is dominated by shear and the outer region by buoyancy. We show that the value of the parameter (* = ^ determines whether the flow is LSM or HSM. Here yr is the friction length scale and L is the Monin-Obukhov length scale. In the present thesis we proposed a model for the near-wall dynamics in LSM. We assume the coherent structure near-wall for low-speed mixed convection to be streamwise aligned periodic array of laminar plumes and give a 2d model for the near wall dynamics, Here the equation to solve for the streamwise velocity is linear with the vertical and spanwise velocities given by the free convection model of Theerthan and Arakeri [1]. We determine the profiles of streamwise velocity, Reynolds shear stress and RMS of the fluctuations of the three components of velocity. From the model we obtain the scaling for wall shear stress rw as rw oc (UooAT*), where Uoo is the free-stream velocity and AT is the temperature difference between the free-stream and the horizontal surface.A similar scaling for rw was obtained in the experiments of Ingersoll [5] and by Narasimha et al [11] in the atmospheric boundary layer under low wind speed conditions. We also derive a formula for boundary layer thickness 5(x) which predicts the boundary layer growth for the combination free-stream velocity Uoo and AT in the low-speed mixed convection regime.
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Ramesh, Chandra D. S. "Turbulent Mixed Convection." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/236.

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Turbulent mixed convection is a complicated flow where the buoyancy and shear forces compete with each other in affecting the flow dynamics. This thesis deals with the near wall dynamics in a turbulent mixed convection flow over an isothermal horizontal heated plate. We distinguish between two types of mixed convection ; low-speed mixed convection (LSM) and high-speed mixed convection (HSM). In LSM the entire boundary layer, including the near-wall region, is dominated by buoyancy; in HSM the near-wall region, is dominated by shear and the outer region by buoyancy. We show that the value of the parameter (* = ^ determines whether the flow is LSM or HSM. Here yr is the friction length scale and L is the Monin-Obukhov length scale. In the present thesis we proposed a model for the near-wall dynamics in LSM. We assume the coherent structure near-wall for low-speed mixed convection to be streamwise aligned periodic array of laminar plumes and give a 2d model for the near wall dynamics, Here the equation to solve for the streamwise velocity is linear with the vertical and spanwise velocities given by the free convection model of Theerthan and Arakeri [1]. We determine the profiles of streamwise velocity, Reynolds shear stress and RMS of the fluctuations of the three components of velocity. From the model we obtain the scaling for wall shear stress rw as rw oc (UooAT*), where Uoo is the free-stream velocity and AT is the temperature difference between the free-stream and the horizontal surface.A similar scaling for rw was obtained in the experiments of Ingersoll [5] and by Narasimha et al [11] in the atmospheric boundary layer under low wind speed conditions. We also derive a formula for boundary layer thickness 5(x) which predicts the boundary layer growth for the combination free-stream velocity Uoo and AT in the low-speed mixed convection regime.
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Lizée, Arnaud. "Contribution à la convection vibrationnelle : contrôle actif de la convection naturelle." Aix-Marseille 2, 1995. http://www.theses.fr/1995AIX22013.

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On considere un fluide en cavite carree differentiellement chauffee, soumis a l'action de la force de gravite et d'une force de volume due a un champ vibratoire. Pour de tres grandes frequences de vibrations, on realise une etude parametrique de l'ecoulement convectif, en utilisant les equations moyennees de la convection vibrationnelle. On met en evidence l'effet du nombre de rayleigh vibrationnel et de la direction de l'axe des vibrations sur le controle de la convection naturelle. On donne alors le domaine d'application physique de ces resultats. Une etude comparative de ces resultats, par simulation directe des equations de boussinesq permet de degager un critere sur la frequence adimensionnelle a partir de laquelle l'emploi des equations moyennees est justifie. Cette etude est realisee pour un nombre de prandtl de 0,71 et un nombre de rayleigh de 10#4. Elle montre les divers regimes possibles pour la convection en cavite carree en fonction de la frequence des vibrations. Par ailleurs, on etudie la stabilite lineaire de la convection vibrationnelle, pour une geometrie cylindrique ; le fluide etant soumis a l'action d'un flux de chaleur interne uniformement reparti. Pour cette etude, on emploie la methode matricielle couplee a la methode de galerkin. Une comparaison de l'emploi de fonctions de bessel et de polynomes est realisee pour le cas axisymetrique
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Eriksson, Stefan. "Global Magnetospheric Plasma Convection." Doctoral thesis, Stockholm : Tekniska högsk, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3230.

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Adams, Thomas M. "Turbulent convection in microchannels." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/19421.

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Books on the topic "Convection"

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Emanuel, Kerry A. Atmospheric convection. New York: Oxford University Press, 1994.

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Jiji, Latif M. Heat Convection. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02971-4.

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Jacqueline, Mallorca, ed. Convection cuisine. New York: Hearst Books, 1988.

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Goluskin, David. Internally Heated Convection and Rayleigh-Bénard Convection. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23941-5.

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Brandt, Alan, and H. J. S. Fernando, eds. Double-Diffusive Convection. Washington, D. C.: American Geophysical Union, 1995. http://dx.doi.org/10.1029/gm094.

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Zeytounian, R. Kh. Convection in Fluids. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2433-6.

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Bejan, Adrian. Convection Heat Transfer. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118671627.

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Gershuni, G. Z. Thermal vibrational convection. Chichester: John Wiley & Sons, 1998.

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Thomas, Katona, ed. Convection oven cookery. San Leandro, Calif: Bristol Pub. Enterprises, 1993.

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Bloch, Barbara. Microwave/convection cookbook. White Plains, NY: Benjamin Co., 1991.

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Book chapters on the topic "Convection"

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Yang, Fu-Bao, and Ji-Ping Huang. "Convective Heat Transfer in Porous Materials." In Diffusionics, 129–43. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0487-3_7.

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AbstractThermal convection stands out as an exceptionally efficient thermal transport mechanism, distinctly separate from conduction and radiation. Yet, the inherently elusive nature of fluid motion poses challenges in accurately controlling convective heat flow. While recent innovations have harnessed thermal convection to achieve effective thermal conductivity, fusing thermal convection in liquids and thermal conduction in solids together to form hybrid thermal metamaterials is still challenging. In this chapter, we introduce the latest progress in convective heat transfer. Leveraging the right porous materials as a medium allows for a harmonious balance and synergy between convection and conduction, establishing stable heat and fluid flows. This paves the way for the innovative advancements in transformation thermotics. These findings demonstrate the remarkable tunability of convective heat transport in complex multicomponent thermal metamaterials.
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Xu, Liu-Jun, and Ji-Ping Huang. "Theory for Thermal Edge States: Graphene-Like Convective Lattice." In Transformation Thermotics and Extended Theories, 305–15. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5908-0_22.

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AbstractIn this chapter, we reveal that edge states are not necessarily limited to wave systems but can also exist in convection-diffusion systems that are essentially different from wave systems. For this purpose, we study heat transfer in a graphene-like (or honeycomb) lattice to demonstrate thermal edge states with robustness against defects and disorders. Convection is compared to electron cyclotron, which breaks space-reversal symmetry and determines the direction of thermal edge propagation. Diffusion leads to interference-like behavior between opposite convections, preventing bulk temperature propagation. We also display thermal unidirectional interface states between two lattices with opposite convection. These results extend the physics of edge states beyond wave systems.
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Abbasi, Adeel, Francis DeRoos, José Artur Paiva, J. M. Pereira, Brian G. Harbrecht, Donald P. Levine, Patricia D. Brown, et al. "Convection." In Encyclopedia of Intensive Care Medicine, 611. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-00418-6_3071.

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Britz, Dieter, and Jörg Strutwolf. "Convection." In Monographs in Electrochemistry, 369–88. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30292-8_14.

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Gooch, Jan W. "Convection." In Encyclopedic Dictionary of Polymers, 169. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2882.

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Stix, Michael. "Convection." In Astronomy and Astrophysics Library, 237–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-56042-2_6.

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McAllister, Sara. "Convection." In Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires, 1–8. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-51727-8_1-1.

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McAllister, Sara. "Convection." In Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires, 130–38. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-52090-2_1.

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Schüssler, M. "Convection." In The Sun: A Laboratory for Astrophysics, 81–98. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2765-3_4.

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Annaratone, Donatello. "Convection." In Engineering Heat Transfer, 63–138. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03932-4_5.

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Conference papers on the topic "Convection"

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"Natural Convection, Mixed Convection." In CONV-09. Proceedings of International Symposium on Convective Heat and Mass Transfer in Sustainable Energy. Connecticut: Begellhouse, 2009. http://dx.doi.org/10.1615/ichmt.2009.conv.470.

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Chae, Myeong-Seon, and Bum-Jin Chung. "Impairment of Local Heat Transfer of the Turbulent Mixed Convection in a Vertical Flat Plate." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-82010.

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The heat transfer of the buoyancy-aided turbulent mixed convective flow in a vertical flat plate was investigated experimentally. Mass transfer experiments were carried out based on the heat and mass transfer analogy. The Rayleigh numbers ranged from 1.69 × 108 to 2.11 × 1013, depending on the height of the vertical flat plate. The Reynolds numbers varied from 4,585 to 17,320 for turbulent regimes. The test results for turbulent forced convections agreed well with the forced convection correlations established by Petukhov et al. The local heat transfer rates of the turbulent mixed flow exhibited the impairment of heat transfer compared to the forced convection and non-monotonous behavior along the axial position due to buoyancy effect. The local minimum heat transfer was 38.6% lower than the forced convection heat transfer. The turbulent mixed convection heat transfer is affected by the height of vertical plate.
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Stein, Robert F., David Benson, Dali Georgobiani, Åke Nordlund, Werner Schaffenberger, Richard J. Stancliffe, Guenter Houdek, Rebecca G. Martin, and Christopher A. Tout. "Surface Convection." In UNSOLVED PROBLEMS IN STELLAR PHYSICS: A Conference in Honor of Douglas Gough. AIP, 2007. http://dx.doi.org/10.1063/1.2818958.

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"Forced Convection." In CONV-09. Proceedings of International Symposium on Convective Heat and Mass Transfer in Sustainable Energy. Connecticut: Begellhouse, 2009. http://dx.doi.org/10.1615/ichmt.2009.conv.180.

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Khadirsharbiyani, Soheil, Jagadish Kotra, Karthik Rao, and Mahmut Taylan Kandemir. "Data Convection." In SIGMETRICS/PERFORMANCE '22: ACM SIGMETRICS/IFIP PERFORMANCE Joint International Conference on Measurement and Modeling of Computer Systems. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3489048.3522647.

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Vadasz, Johnathan J., and Saneshan Govender. "Finite Amplitude Convection in Rotating Porous Media." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47380.

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The linear stability of centrifugally induced convection in rotating porous layers suggests a wide range of possible convective solutions. While the linear solutions indicate possible convective regimes and flow details, it is the non-linear effect that eventually establishes the detailed nature of the convection patterns. The latter is accounted for in a finite amplitude analysis. The results of the finite amplitude analysis via the weak non-linear theory are presented here with the aim to assist in selecting between these solutions and providing further analytical detail on the nature of convection.
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Komosinski, Maciej, and Konrad Miazga. "Parametrizing convection selection." In GECCO '19: Genetic and Evolutionary Computation Conference. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3321707.3321864.

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de Vahl Davis, Graham. "Unnatural Natural Convection." In Heat and Mass Transfer Australasia. Connecticut: Begellhouse, 2023. http://dx.doi.org/10.1615/978-1-56700-099-3.20.

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Silvers, L. J., M. R. E. Proctor, Richard J. Stancliffe, Guenter Houdek, Rebecca G. Martin, and Christopher A. Tout. "Interacting Convection Zones." In UNSOLVED PROBLEMS IN STELLAR PHYSICS: A Conference in Honor of Douglas Gough. AIP, 2007. http://dx.doi.org/10.1063/1.2818967.

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Jang, Seok Pil, and Stephen U. S. Choi. "Free Convection in a Rectangular Cavity (Benard Convection) With Nanofluids." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61054.

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Investigators have been surprised with new thermal phenomena behind the recently discovered nanofluids, fluid with unprecedented stability of suspended nanoparticles although huge differences in the density of nanoparticles and fluid. For example, nanofluids have anomalously high thermal conductivities at very low volume fraction, strongly temperature-dependent and size-dependent conductivity, and three-fold higher critical heat flux than that of base fluids. In this paper, the thermal characteristics of free convection in a rectangular cavity with nanofluids such as water-based nanofluids containing 6nm copper and 2nm diamond are theoretically investigated with a new model of the thermal conductivity for nanofluids presented by Jang and Choi. In addition, based on theoretical results, the effects of various parameters such as the volume fraction, the temperature, and the size of nanoparticles on free convective instability and heat transfer characteristics in a rectangular cavity with nanofluids are suggested.
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Reports on the topic "Convection"

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Stratton, R. A., and A. J. Stirling. Examining the dynamical response to convective heating using an idealised version of the Met Office’s Unified Model. Met Office, May 2024. http://dx.doi.org/10.62998/ouao1203.

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In global circulation models, poor coupling between convection parametrizations and the resolved dynamics poses significant obstacles to the representation of a range of convectively coupled atmospheric phenomena. Here we focus on one part of this coupling and ask whether the dynamical response to convection can adequately be captured when convection is parametrized only as heat and moisture sources to the resolved scale, (as is usually the case in convection parametrizations), and without including either mass, or vertical momentum transport terms. To this end, a ‘perfect’ convection parametrization is constructed under idealised conditions, for which the inputs of heat and moisture are derived by coarse-graining higher-resolution reference simulations of convecting plumes. The dynamical response of the ‘perfect’ parametrization is then compared with that of the reference simulation. These experiments are conducted using the Met Office Unified Model running with a horizontal resolution of 30 km in a quiescent atmosphere and show that, provided the heating is applied regularly over short (five minute) time intervals, in a dry model a very similar resulting dynamical response can be obtained, without the need for additional mass transfer or momentum terms. In a wet model, the agreement remains good, with differences of no more than 20% developing. If, however, the heating is applied intermittently, such that only the time-averaged heating is correct (as can be the case when using a CAPE-closed convection scheme), the dynamical response is significantly disrupted, and we conclude that this is likely to be a major contributor to the difficulties in representing convectively-coupled atmospheric phenomena in the Unified Model.
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Alter, Ross, Michelle Swearingen, and Mihan McKenna. The influence of mesoscale atmospheric convection on local infrasound propagation. Engineer Research and Development Center (U.S.), February 2024. http://dx.doi.org/10.21079/11681/48157.

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Infrasound—that is, acoustic waves with frequencies below the threshold of human hearing—has historically been used to detect and locate distant explosive events over global ranges (≥1,000 km). Simulations over these ranges have traditionally relied on large-scale, synoptic meteorological information. However, infrasound propagation over shorter, local ranges (0–100 km) may be affected by smaller, mesoscale meteorological features. To identify the effects of these mesoscale meteorological features on local infrasound propagation, simulations were conducted using the Weather Research and Forecasting (WRF) meteorological model to approximate the meteorological conditions associated with a series of historical, small-scale explosive test events that occurred at the Big Black Test Site in Bovina, Mississippi. These meteorological conditions were then incorporated into a full-wave acoustic model to generate meteorology-informed predictions of infrasound propagation. A series of WRF simulations was conducted with varying degrees of horizontal resolution—1, 3, and 15 km—to investigate the spatial sensitivity of these infrasound predictions. The results illustrate that convective precipitation events demonstrate potentially observable effects on local infrasound propagation due to strong, heterogeneous gradients in temperature and wind associated with the convective events themselves. Therefore, to accurately predict infrasound propagation on local scales, it may be necessary to use convection-permitting meteorological models with a horizontal resolution ≤4 km at locations and times that support mesoscale convective activity.
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NEW JERSEY INST OF TECH NEWARK. Probing Solar Convection. Fort Belvoir, VA: Defense Technical Information Center, November 1996. http://dx.doi.org/10.21236/ada329650.

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Miller, Douglas Scott. Convection in Type 2 supernovae. Office of Scientific and Technical Information (OSTI), October 1993. http://dx.doi.org/10.2172/10139321.

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McWilliams, James C., and Sonya A. Legg. Deep Convection in the Ocean. Fort Belvoir, VA: Defense Technical Information Center, June 1999. http://dx.doi.org/10.21236/ada368436.

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Davis, Russ E. Convection in the Labrador Sea. Fort Belvoir, VA: Defense Technical Information Center, October 1997. http://dx.doi.org/10.21236/ada329879.

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Goss, Hanna. Tracking Aerosol Convection interactions ExpeRiment. Office of Scientific and Technical Information (OSTI), October 2019. http://dx.doi.org/10.2172/1570965.

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D'Asaro, Eric A. Lagrangian Floats for Deep Convection. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada627627.

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McWilliams, James C. Deep Convection in the Ocean. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada628461.

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McWilliams, James C., and Sonya A. Legg. Deep Convection in the Ocean. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada628466.

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