Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
661083 | International Journal of Heat and Mass Transfer | 2007 | 12 Pages |
Abstract
This study deals with the onset of thermal natural convection in a system consisting of a fluid layer overlying a homogeneous porous medium. A linear stability analysis is carried out, using the so-called two-domain approach and including the Brinkman term in the porous region (2ΩDB). Results are systematically compared to those obtained using the one-domain approach (1Ω) and the classical Darcy formulation of the two-domain approach (2ΩD). A better agreement is found between the 2ΩDB2ΩDB and 2ΩD neutral curves, than with the 1Ω curves, indicating that the inclusion of the Brinkman term plays a secondary role on the stability results. The different treatment of the interfacial region is discussed on the basis of these results.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
S.C. Hirata, B. Goyeau, D. Gobin, M. Carr, R.M. Cotta,