Results 141 to 150 of about 643 (180)

Molecular dynamics and Rayleigh–Benard convection

The Journal of Chemical Physics, 1989
A number of recent molecular dynamic studies have shown that transient convection cells can occur in hard disk systems containing as few as 5000 particles. We extend these studies, with special attention to the role of the various algorithms used to impose thermal boundary conditions.
James A. Given, Enrico Clementi
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Chaos and turbulence in Rayleigh-Benard convection

Physica Scripta, 1989
Some situations of turbulent Rayleigh-Benard convection are presented with increasing number of spatial degrees of freedom.
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Bifurcation control of Rayleigh-Benard convection

Proceedings of the 1999 IEEE International Conference on Control Applications (Cat. No.99CH36328), 2003
Bifurcation control deals with the modification of the bifurcation characteristics of a parametrized nonlinear system by a judiciously designed control input. In this paper, we investigate the problem of active control of Rayleigh-Benard convection (RBC) via a bifurcation control approach.
null Dong Chen, H.O. Wang, L.E. Howle
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The Turbulent Regimes of Rayleigh-Benard Convection

1998
A Rayleigh-Benard convection experiment is performed with Helium at low temperature, as the working one-phase fluid [1]. Helium is closed in a cylindrical cell 20 cm high and 10 cm in diameter. Three experimental parameters, independently adjustable, and accurately measured for each fixed condition, allow to study the Rayleigh Benard problem from the ...
X. Chavanne, F. Chilla, B. Castaing, B. Chabaud, B. Hebral, P. Roche   +5 more
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Moist Rayleigh-Benard convection

2015
We report the observations from turbulent thermal Rayleigh-Benard convection experiment with a two-phase liquid-vapor binary mixture. Evaporation/condensation processes in a turbulent convection are accompanied by the formation of cloud like structures above the liquid-vapor interface.
Prabhakaran, P., Winkel, F., Krekhov, A., Nobach, H., Bodenschatz, E. ; https://orcid.org/0000-0002-2901-0144   +4 more
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Rotating Rayleigh-Benard convection with modulation

Journal of Physics A: Mathematical and General, 1989
The author considers rotating Rayleigh-Benard convection with modulated rotation speed. Galerkin truncation under realistic, i.e. experimentally realisable, boundary conditions is carried out. The threshold of convection can be raised or lowered depending on the Prandtl number and rotation speed.
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Hilbert diagnostics of Rayleigh-Benard convection in fluids

Optoelectronics, Instrumentation and Data Processing, 2012
An combined optical and thermal imaging experimental system was designed to investigate Rayleigh-Benard convection of a fluid in a layer with two rigid isothermal boundaries and a free upper boundary under steady and unsteady thermal boundary conditions.
V. A. Arbuzov, E. V. Arbuzov, N. S. Bufetov, E. O. Shlapakova   +3 more
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Effects of boundaries on Rayleigh-Benard convection

1991
The effects of boundary conditions on the linear stability of finite cell pure fluid Rayleigh-Benard convection are investigated via a variational formalism and a perturbative approach. Some general properties of the critical Rayleigh number, Rc, with respect to change of boundary conditions or system size are derived.
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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
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Settling behaviour of particles in Rayleigh-Benard convection

2020
<p>Our numerical study evaluates the settling rate of solid particles, suspended in a highly <br>vigorous, finite Prandtl number convection of a bottom heated fluid. We explore a broad <br>range of model parameters, covering particle types appearing in various natural systems,&
Patocka, Vojtech, Calzavarini, Enrico, Tosi, Nicola   +2 more
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