Results 231 to 240 of about 35,832 (271)

Numerical Study of Rayleigh-Benard Convection in a Rectangular Box

2009
Numerical study for convective instability of a liquid with linear vertical initial temperature profile in a closed box is presented. The paper provides stability analysis of two-dimensional rolls. Results are compared with R. Krishnamurti, F.H. Busse and coworkers data.
V. V. Kolmychkov, O. S. Mazhorova, Yu. P. Popov, O. V. Shcheritsa   +3 more
openaire   +1 more source

Heat transfer enhancement in Rayleigh-Benard convection

International Journal of Heat and Mass Transfer, 1989
Abstract Direct numerical simulations of three-dimensional Rayleigh-Benard convection are performed with non-uniform temperature boundary conditions at the lower plate. The boundary conditions excite convective states in a form of counterrotating convective rolls that remain stable for at least ten eddy-turnover times even if their size is ...
openaire   +1 more source

Simulation of complex regimes of Rayleigh-Benard convection

Numerical Analysis and Applications, 2011
2D and 3D turbulent convectional flows of viscous and incompressible fluids heated from below in a rectangular parallelepiped are numerically simulated. The horizontal boundaries are stress-free in 3D simulation and stress-free or rigid in 2D simulation.
openaire   +1 more source

Scaling of hard thermal turbulence in Rayleigh-Bénard convection

Journal of Fluid Mechanics, 1989
B. Castaing, G. Gunaratne, F. Heslot, L. Kadanoff, A. Libchaber, S. Thomae, Xiao-zhong Wu, Stéphane Zaleski, G. Zanetti   +8 more
semanticscholar   +1 more source

Numerical simulation of turbulent Rayleigh-Benard convection

Progress in Computational Fluid Dynamics, An International Journal, 2012
The turbulent convection of liquid in a horizontal layer is simulated numerically for the case of heating from below. The liquid is assumed to be viscous and incompressible, and the layer boundaries are assumed to be flat, isothermal, and free from shear stress.
openaire   +1 more source

RAYLEIGH-BENARD CONVECTION IN TUBE BUNDlES

Proceeding of International Heat Transfer Conference 10, 1994
Martin, Holger, Pajak, Danuta
openaire   +1 more source

Recent Developments in Rayleigh-Bénard Convection

, 2000
E. Bodenschatz, W. Pesch, G. Ahlers
semanticscholar   +1 more source

Diffusive Transport in the Rayleigh-Benard Convective Flow

1988
Dispersion of neutrally buoyant particles immersed in a well-organized flow is an important phenomenon in chemical reactions, mixing of fluids and spreading of pollutants. Taylor in 1953 showed that for the longitudinal dispersion in Poiseuille flow in a cylindrical tube the enhancement of the diffusion scales as $$ {D^{ * }} = D + \frac{{{{\bar{u}}
openaire   +1 more source

Strong spatial resonance in Rayleigh-Benard convection

1994
These Ecole polytechnique federale de Lausanne EPFL, n° 1298 (1994) Reference doi:10.5075/epfl-thesis-1298Print copy in library catalog Record created on 2005-03-16, modified on 2016-08 ...
openaire   +1 more source

Statistics of kinetic and thermal energy dissipation rates in two-dimensional turbulent Rayleigh–Bénard convection

Journal of Fluid Mechanics, 2017
Yang Zhang, Quan Zhou, Chao Sun
semanticscholar   +1 more source