Results 71 to 80 of about 643 (180)
The effect of controlled vibrations on Rayleigh-Benard convection
Journal of Physics: Conference Series, 2021 Abstract The paper presents the results of a numerical study of convective heat transfer in a long horizontal layer heated from below with and without the vibration effect of the lower wall. The simulation was carried out on the basis of solving the Navier-Stokes 2D equations for an incompressible fluid in the Boussinesq approximation ...
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Force balance in rapidly rotating Rayleigh-Bénard convection. [PDF]
J Fluid Mech, 2021 Guzmán AJA +5 more
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Unsteady Heating of Rayleigh-Benard Convection
Zeitschrift für Naturforschung A, 2004 The linear thermal instability of a horizontal fluid layer with time-periodic temperature distribution is studied with the help of the Floquet theory. The time-dependent part of the temperature has been expressed in Fourier series. Disturbances are assumed to be infinitesimal. Only even solutions are considered.
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Reduced basis method applied to a convective stability problem
Journal of Mathematics in Industry, 2018 Numerical reduced basis methods are instrumental to solve parameter dependent partial differential equations problems in case of many queries. Bifurcation and instability problems have these characteristics as different solutions emerge by varying a ...
Henar Herrero, Yvon Maday, Francisco Pla
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Comptes Rendus. PhysiqueWe consider the turbulent heat transport induced by thermal convection. The widespread belief is that the transport properties of the turbulent flow should be independent of the tiny molecular diffusivities for asymptotically strong driving, but the ...
Hadjerci, Gabriel +4 more
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International Journal of Mathematics and Mathematical Sciences, 2001 The qualitative effect of nonuniform temperature gradient on the linear stability analysis of the Rayleigh-Benard convection problem in a Boussinesquian, viscoelastic fluid-filled, high-porosity medium is studied numerically using the single-term ...
Pradeep G. Siddheshwar +1 more
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On the aspect ratio of Rayleigh‐Benard convection cells
Geophysical Research Letters, 1988 We report numerical model calculations of isoviscous bottom‐heated convection in a two‐dimensional box with aspect ratio twelve. The aim was to determine the preferred aspect ratio of convection cells. Time‐dependent runs were started from two widely different initial conditions.
Ulrich Christensen, David Yuen
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Axisymmetric Rayleigh-Benard convection [PDF]
This thesis considers axisymmetric Rayleigh-Benard convection in an infinite horizontal layer of fluid heated from below major emphasis is placed on a study of the effect of rotation of the layer, where both the stationary and overstable cases are analysed.
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The Rayleigh-Benard Convection in Rarefied Gases
, 1998 In the present paper we investigate the Rayleigh-Benard convection in rarefied gases and demonstrate by numerical experiments the transition from purely thermal conduction to a natural convective flow for a large range of Knudsen numbers from 0.02 downto 0.001.
Cercignani, Carlo +2 more
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Initial-boundary layer associated with the 3-D Boussinesq system for Rayleigh-Benard convection
Electronic Journal of Differential Equations, 2020 This article concerns the initial-boundary layer effects of the 3-D incompressible Boussinesq system for Rayleigh-Benard convection with ill-prepared initial data.
Xiaoting Fan, Shu Wang, Wen-Qing Xu
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