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Rathish Kumar, B. V.; Shalini

Double diffusive natural convection in a doubly stratified wavy porous enclosure. (English) Zbl 1190.76164

Appl. Math. Comput. 171, No. 1, 180-202 (2005).
Summary: Combined heat and mass transfer process by natural convection along a vertical wavy surface in a thermal and mass stratified fluid saturated porous enclosure has been numerically analysed. Finite element method has been used and the influence of varying flow, heat and mass transfer governing parameters has been reported. Presence of thermal and mass stratification terms reduces the Nusselt number and Sherwood number values in all the cases. The flow circulation pattern which is anti-clockwise when the species buoyancy forces are opposing the thermal buoyancy forces, gets clockwise when the forces are aiding. When the two buoyancy forces are equal and opposing, a multi-cellular pattern with alternating circulation orientation manifests. Several other interesting features such as thermal and mass boundary layers, thermal plumes, secondary circulation zones, flow intensification etc. are noticed in the flow, temperature and concentration fields with varying flow, heat and mass transfer governing parameters.

Cited in 4 Documents

MSC:

76R99 Diffusion and convection
76M10 Finite element methods applied to problems in fluid mechanics
76S05 Flows in porous media; filtration; seepage

Keywords:

Double diffusion; Natural convection; Finite element method; Porous enclosure; Thermal and mass stratification; Wavy surface
PDFBibTeX XMLCite
\textit{B. V. Rathish Kumar} and \textit{Shalini}, Appl. Math. Comput. 171, No. 1, 180--202 (2005; Zbl 1190.76164)
Full Text: DOI

References:

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