Search results for "Rayleigh–Bénard convection"

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Lithospheric stresses in Rayleigh–Bénard convection: effects of a free surface and a viscoelastic Maxwell rheology

2015

GeophysicsRheologyGeochemistry and PetrologyLithosphereFree surfaceLithospheric flexureGeophysicsGeologyViscoelasticityRayleigh–Bénard convectionGeophysical Journal International
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Adiabatic eigenflows in a vertical porous channel

2014

AbstractThe existence of an infinite class of buoyant flows in a vertical porous channel with adiabatic and impermeable boundary walls, called adiabatic eigenflows, is discussed. A uniform heat source within the saturated medium is assumed, so that a stationary state is possible with a net vertical through-flow convecting away the excess heat. The simple isothermal flow with uniform velocity profile is a special adiabatic eigenflow if the power supplied by the heat source is zero. The linear stability analysis of the adiabatic eigenflows is carried out analytically. It is shown that these basic flows are unstable. The only exception, when the power supplied by the heat source is zero, is th…

PhysicsMechanical EngineeringIsothermal flowBoundary (topology)Bénard convectionMechanicsCondensed Matter PhysicsPhysics::Fluid DynamicsMechanics of MaterialsCombined forced and natural convectionconvection in porous mediaAdiabatic processbuoyancy-driven instabilityStationary stateCommunication channelRayleigh–Bénard convectionConvection cell
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