Results 71 to 80 of about 259 (134)

Study of regular and chaotic dynamics in double diffusive Rayleigh-Bénard convection of a micropolar fluid

Results in Engineering
The study explores the behaviour of a micropolar fluid subjected to a double-diffusive Rayleigh-Bénard configuration, focusing on the emergence of regular convection, periodic motion, and chaotic dynamics across a broad range of the scaled Rayleigh ...
Anirudh P, M.S. Jagadeesh Kumar
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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
doaj   +1 more source

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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Radiatively driven convection: diffusivity-free regimes of geophysical and astrophysical flows in the laboratory

Comptes Rendus. Physique
We 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, Bouillaut, Vincent, Miquel, Benjamin, Aumaître, Sébastien, Gallet, Basile   +4 more
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Rayleigh-Benard convection in a viscoelastic fluid-filled high-porosity medium with nonuniform basic temperature gradient

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, C. V. Sri Krishna   +1 more
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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.
openaire   +1 more source

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
doaj  

Effect of Modulation on Rayleigh-Benard Convection-II

Zeitschrift für Naturforschung A, 2003
The linear stability of a horizontal fluid layer, confined between two rigid walls, heated from below and cooled from above is considered. The temperature gradient between the walls consists of a steady part and a periodic part that oscillates with time. Only infinitesimal disturbances are considered.
openaire   +1 more source

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, Giurin, Maria Cristina, Struckmeier, Jens   +2 more
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Convection de Bénard–Rayleigh. Cas libre-libre

Comptes Rendus. Mécanique, 2023
Iooss, Gérard
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