Results 91 to 100 of about 243,456 (164)

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

open access: yesComptes 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   +4 more
doaj   +1 more source

Rayleigh-Benard convection in a viscoelastic fluid-filled high-porosity medium with nonuniform basic temperature gradient

open access: yesInternational 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
doaj   +1 more source

Reduced basis method applied to a convective stability problem

open access: yesJournal 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

Kinetic Study Of The Rayleigh-Benard Flows

open access: yes, 2009
The present paper employs the direct simulation Monte Carlo (DSMC) method to study the Rayleigh-Benard flows, where the temperature ratio of the upper to lower plate is fixed to 0.1.
张俊, Fan J, 樊菁
core   +1 more source

On the aspect ratio of Rayleigh‐Benard convection cells

open access: yesGeophysical 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
openaire   +1 more source

On the oscillatory behavior of transient Rayleigh Benard convection of air for 2D channel flow at moderate Rayleigh numbers [PDF]

open access: yes, 2012
Unsteady numerical simulation of Rayleigh Benard convection heat transfer from a 2D channel is performed. The oscillatory behavior is attributed to recirculation of ascending and descending flows towards the core of the channel producing organized rolled
Neishabouri, R.   +3 more
core   +1 more source

Coherent structures in boundary layers of Rayleigh-Benard convection

open access: yes, 2004
A coherent structure is revealed experimentally by a dyeing technique in the boundary layer of Rayleigh-Benard convection in water. Dye accumulates in streaks aligned with the mean flow.
Tilgner, Andreas, Haramina, Tatjana
core   +1 more source

Lattice Boltzmann simulation of Rayleigh-Benard convection in enclosures filled with Al2O3-water nanofluid

open access: yes, 2018
In order to clarify the controversies for the role of nanoparticles on heat transfer in natural convection, lattice Boltzmann method is used to investigate Rayleigh-Benard convection heat transfer in differentially-heated ...
Weihua Cai   +5 more
core   +1 more source

Interaction of Rayleigh-Benard Convection and Oscillatory Flows [code 119334]

open access: yes, 2014
The effects of oscillatory flow structures on transient convective heat transfer in an air-filled shallow enclosure with a vibrating side wall are investigated.
Aktas, Murat Kadri, Çetindag S.
core   +1 more source

Axisymmetric Rayleigh-Benard convection [PDF]

open access: yes
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

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