Frontiers in Energy
>> 2010,
Volume 4,
Issue 4
doi:
10.1007/s11708-010-0017-x
RESEARCH ARTICLE
An autonomous system for thermal convection of viscoelastic fluids in a porous layer using a thermal nonequilibrium model
School of Physics Science and Technology, Soochow University, Suzhou 215006, China
Available online: 2010-12-05
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Abstract
Thermal convection of viscoelastic fluids saturating a horizontal porous layer heated from below is analyzed using a thermal nonequilibrium model to take account of the interphase heat transfer between the fluid and the solid. The viscoelastic character of the flow is considered by a modified Darcy’s law. An autonomous system with five differential equations is deduced by applying the truncated Galerkin expansion to the momentum and heat transfer equations. The effects of interphase heat transfer on the thermal convection of viscoelastic fluids in a porous medium are analyzed and discussed. The results show that the weak interphase heat transfer tends to stabilize the steady convection.
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