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On Thermal Convection in a Large Box
Studies in Applied Mathematics, 1977Daniels [4] has shown that the presence of imperfectly insulating sidewalls transforms the onset of Bénard convection in a layer of fluid confined by one pair of lateral boundaries from a bifurcation to a continuous transition as the Rayleigh number increases through the critical value.
Brown, S. N., Stewartson, K.
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Annual Review of Fluid Mechanics, 1975
If a horizontal fluid layer is heated from below or cooled from above, the heat will be transported through the fluid by conduction alone, if the heating is very weak. If, however, the amount of heating is increased, the conduction state becomes unstable and a convective motion is set up.
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If a horizontal fluid layer is heated from below or cooled from above, the heat will be transported through the fluid by conduction alone, if the heating is very weak. If, however, the amount of heating is increased, the conduction state becomes unstable and a convective motion is set up.
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On numerical realizability of thermal convection
Journal of Computational Physics, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zbigniew Pawel Piotrowski +3 more
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Modulation of Thermal Convection Instability
The Physics of Fluids, 1971The linear stability problem for a fluid in a classical Bénard geometry, when the temperature gradient has both a steady and a time-periodic component, is considered. The modulating effect of the oscillatory gradient on the stability characteristics of the basic configuration is examined.
Rosenblat, S., Tanaka, G. A.
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Journal of the Geological Society, 1977
The definition and specification of a convective system is outlined. For example for a global system we have: very small Reynolds number (slow ‘viscous’ flow); very large Prandtl number (heat transfer independent of inertial effects); large Peclet numbers (advection dominant in forced convection); very large Rayleigh number (free convection strong and ...
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The definition and specification of a convective system is outlined. For example for a global system we have: very small Reynolds number (slow ‘viscous’ flow); very large Prandtl number (heat transfer independent of inertial effects); large Peclet numbers (advection dominant in forced convection); very large Rayleigh number (free convection strong and ...
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Thermal Convection in a Cylindrical Enclosure
42nd AIAA Aerospace Sciences Meeting and Exhibit, 2004The paper highlights the onset of convection in a fluid layer partially filled in an axisymmetric container. The equilibrium of the fluid is disturbed with the deformation of the interface due to residual acceleration. The general problem of deformable interface involves a dimensionless parameter, the Bond number.
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Thermal Convection in Nanofluids
2011Nanofluids consist of a suspension of very small metallic like particles suspended in a carrier fluid. Typically these fluids are manufactured by using a suspension of copper, Cu, copper oxide, CuO, or aluminium oxide, Al2O3, in water or ethylene glycol, cf.
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Les of Turbulent Thermal Convection
1997We describe results obtained from Large Eddy Simulations (LES) of turbulent natural convection flow in an infinite horizontal fluid layer heated from below. We use a dynamic subgrid scale model in scaling formulation, and discuss an anisotropic modification of it.
ABBA', ANTONELLA +3 more
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Convection of particle thermals
Journal of Hydraulic Research, 1997The motion induced by particle thermals (a cloud of heavy particles released into an otherwise stagnant fluid) has been investigated by a three-dimensional numerical model. The model formulation is based on the governing equations for the conservation of mass, momentum and density excess, assuming the discrete particles can be represented by a ...
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An introduction to thermal convection
EAS Publications Series, 2006In this lecture I propose a little tour of thermal convection and its applications in astrophysics. The first part of the lecture is devoted to a qualitative introduction to the convective instability using the Schwarzschild criterion; then, concentrating on the equations governing the fluid motions, I introduce the Boussinesq and anelastic ...
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