Results 31 to 40 of about 243,456 (164)

Numerical analysis of Poiseuille-Rayleigh-Bénard convection in supercritical carbon dioxide

open access: yesNuclear Engineering and Technology, 2022
The supercritical carbon dioxide (S–CO2) Brayton cycle is an important energy conversion technology for the fourth generation of nuclear energy. Since the printed circuit heat exchanger (PCHE) used in the S–CO2 Brayton cycle has narrow channels, Rayleigh-
Zhipeng Wang   +5 more
doaj   +1 more source

Horizontal Cellular Oscillations Caused by Time-Periodic Resonant Thermal Forcing in Weakly Nonlinear Darcy-Bénard Convection

open access: yesFluids, 2017
The onset of Rayleigh-Bénard convection in a horizontally unbounded saturated porous medium is considered. Particular attention is given to the stability of weakly nonlinear convection between two plane horizontal surfaces heated from below.
Ibrahim M. Jais, D. Andrew S. Rees
doaj   +1 more source

Monte Carlo Simulation Of Thermal Fluctuations Below The Onset Of Rayleigh-Benard Convection

open access: yes, 2009
The density fluctuations below the onset of convection in the Rayleigh-Benard problem are studied with the direct simulation Monte Carlo method. The particle simulation results clearly show the connection between the static correlation functions of ...
张俊, Fan J, 樊菁
core   +1 more source

Instability of Two-Layer Rayleigh-Benard Convection with Interfacial Thermocapillary Effect

open access: yes, 2004
The linear instability analysis of the Rayleigh-Allarangoni-Benard convection in a two-layer system of silicon oil 10cS and fluorinert FC70 liquids are performed in a larger range of two-layer depth ratios H, from 0.2 to 5.0 for different total depth H ...
Nguyen TH   +4 more
core   +2 more sources

Study of heat and mass transport in Couple-Stress liquid under G-jitter effect

open access: yesAin Shams Engineering Journal, 2018
In the present paper, we deal with the effect of G-jitter (time periodic gravity modulation) on the stability of double diffusive convection in couple stress liquid by method of non-linear analysis. The infinitesimal disturbances are expanded in terms of
Anand Kumar, Vanita, Vinod K. Gupta
doaj   +1 more source

Incompressible flows and the Boussinesq approximation: 50 years of CFD

open access: yesComptes Rendus. Mécanique, 2022
We offer a synthetic exposition on the state of the art for Computational Fluid Dynamics (CFD) relevant to the Navier–Stokes equations with the Boussinesq approximation, smoothly blending a history of the field with an accessible exposition of the ...
Lappa, Marcello
doaj   +1 more source

Surface deflection in Rayleigh-Benard convection

open access: yesJournal de Physique, 1989
The problem of the deformation of a free upper surface in a convective layer subjected to an adverse temperature gradient is analyzed. An analytical expression for the amplitude of the surface deflection in terms of the fluid layer parameters has been obtained when buoyancy force is the responsible mechanism for instability (thick layers).
Jiménez-Fernandez, Javier   +1 more
openaire   +2 more sources

Bifurcations in Rayleigh-Benard Convection

open access: yes, 2005
Rayleigh-Benard convection is a particular type of thermal convection problem. The first step in the project was writing computer code to find computational solutions, using algorithms from numerical analysis.
LeRay, David James
core   +3 more sources

Scaling Laws in Rayleigh‐Bénard Convection

open access: yesEarth and Space Science, 2019
The heat transfer scaling theories for Rayleigh‐Bénard convection (RBC) are reviewed and discussed for configurations with and without rotation and magnetic fields.
Meredith Plumley, Keith Julien
doaj   +1 more source

Sparse nonlinear models of chaotic electroconvection

open access: yesRoyal Society Open Science, 2021
Convection is a fundamental fluid transport phenomenon, where the large-scale motion of a fluid is driven, for example, by a thermal gradient or an electric potential. Modelling convection has given rise to the development of chaos theory and the reduced-
Yifei Guan   +2 more
doaj   +1 more source

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