In this study we analyze the combined influence of mass and thermal stratification on non-Darcian double-diffusive natural convection from a wavy vertical wall to a porous media. A finite difference scheme based on the Keller box approach is derived for the boundary layer equations resulting from the use of nonsimilarity transformation on the coupled nonlinear partial differential equations. Extensive numerical simulations are carried out to analyze the influence of wave amplitude Grashof number thermal stratification parameter concentration stratification parameter buoyancy ratio and Lewis number on the double-diffusive natural convection process. Increasing and or decreasing is seen to favor the heat and mass transport in the porous region thereby reducing the heat and mass fluxes along the vertical heated surface. Increasing or decreasing leads to an enhanced mass transfer process. Presence of surface waviness brings in a wavy pattern in the local heat and mass fluxes with decreasing magnitudes in the streamwise direction in the presence of stratification terms.
Combined Influence of Mass and Thermal Stratification on Double-Diffusion Non-Darcian Natural Convection From a Wavy Vertical Wall to Porous Media
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division March 7, 2004; revision received November 20, 2004. Associate Editor: J. N. Chung.
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Rathish Kumar, B. V., and Shalini (June 6, 2005). "Combined Influence of Mass and Thermal Stratification on Double-Diffusion Non-Darcian Natural Convection From a Wavy Vertical Wall to Porous Media ." ASME. J. Heat Transfer. June 2005; 127(6): 637–647. https://doi.org/10.1115/1.1863258
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