scholarly journals Effects of variable viscosity on non-Darcy MHD free convection along a non-isothermal vertical surface in a thermally stratified porous medium

2007 ◽  
Vol 31 (8) ◽  
pp. 1621-1634 ◽  
Author(s):  
Ahmed A. Afify
Keyword(s):  
Porous Medium ◽  
Free Convection ◽  
Variable Viscosity ◽  
Vertical Surface

DOUBLE DIFFUSIVE FREE CONVECTION ALONG A VERTICAL SURFACE IN A DOUBLY STRATIFIED POROUS MEDIUM WITH SORET AND DUFOUR EFFECTS UNDER MHD FORCES

2017 ◽  
Vol 20 (10) ◽  
pp. 865-879
Author(s):  
S.V.S.S.N.V.G. Krishna Murthy ◽  
Frédéric Magoulès ◽  
B. V. Rathish Kumar ◽  
Vinay Kumar
Keyword(s):  
Porous Medium ◽  
Free Convection ◽  
Vertical Surface ◽  
Soret And Dufour Effects ◽  
Double Diffusive

Effect of Double Stratification on Free Convection in a Darcian Porous Medium

2004 ◽  
Vol 126 (2) ◽  
pp. 297-300 ◽  
Author(s):  
P. V. S. N. Murthy ◽  
D. Srinivasacharya and ◽  
P. V. S. S. S. R. Krishna
Keyword(s):  
Porous Medium ◽  
Free Convection ◽  
Vertical Surface ◽  
Function Form ◽  
Double Stratification ◽  
Flow Temperature ◽  
Complex Interactions ◽  
Free Convection Heat ◽  
Buoyancy Ratio ◽  
Darcy Rayleigh Number

The problem of free convection heat and mass transfer from vertical surface embedded in a doubly stratified porous medium has been studied. The similarity solution is presented for the case of uniform heat and mass flux conditions when the thermal and solutal stratification of the medium are assumed to have the power function form x1/3. The flow, temperature and concentration fields are effected by the complex interactions among the diffusion ratio parameter Le and buoyancy ratio parameter N in addition to the flow driving Darcy-Rayleigh number Rax. The temperature and concentration profiles are effected due to double stratification of the medium and its effect on the Nusselt and Sherwood numbers is discussed.

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