Title of article :
Numerical analysis of re-oscillation and non-centrosymmetric convection in a porous enclosure due to opposing heat and mass fluxes on the vertical walls
Author/Authors :
Yoshio Masuda، نويسنده , , Michio Yoneya، نويسنده , , Akira Suzuki، نويسنده , , Shigeo Kimura، نويسنده , , Farid Alavyoon، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
6
From page :
250
To page :
255
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.
Keywords :
double diffusion , porous medium , Buoyancy ratio , Numerical simulation , Peculiar convection pattern
Journal title :
International Communications in Heat and Mass Transfer
Serial Year :
2010
Journal title :
International Communications in Heat and Mass Transfer
Record number :
1220637
Link To Document :
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