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Numerical analysis of re-oscillation and non-centrosymmetric convection in a porous enclosure due to opposing heat and mass fluxes on the vertical walls
- Source :
-
International Communications in Heat & Mass Transfer . Mar2010, Vol. 37 Issue 3, p250-255. 6p. - Publication Year :
- 2010
-
Abstract
- Abstract: Two peculiar convection patterns–re-oscillation and stable non-centrosymmetric convection–are observed when two-dimensional double-diffusive convection in a porous enclosure (aspect ratio=1.5) is analysed numerically. The top and bottom walls of the enclosure are insulated; constant and opposing heat and mass fluxes are prescribed on the vertical walls. Re-oscillation occurs when the convection pattern changes from centrosymmetric to non-centrosymmetric. When the buoyancy ratio, which generates re-oscillation convection, is marginally lower, the convection pattern changes to stable non-centrosymmetric. These two convection patterns can be observed only for limited values of the Rayleigh number, Lewis number, and buoyancy ratio. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 07351933
- Volume :
- 37
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- International Communications in Heat & Mass Transfer
- Publication Type :
- Academic Journal
- Accession number :
- 47825330
- Full Text :
- https://doi.org/10.1016/j.icheatmasstransfer.2009.11.008