Effect of heat generation or absorption on thermophoretic free convection boundary layer from a vertical flat plate embedded in a porous medium

2006 ◽  
Vol 33 (9) ◽  
pp. 1096-1102 ◽  
Author(s):  
Ali J. Chamkha ◽  
Ali F. Al-Mudhaf ◽  
Ioan Pop
Keyword(s):  
Boundary Layer ◽  
Porous Medium ◽  
Free Convection ◽  
Flat Plate ◽  
Heat Generation ◽  
Convection Boundary Layer ◽  
Convection Boundary ◽  
Heat Generation Or Absorption ◽  
Free Convection Boundary Layer ◽  
Vertical Flat Plate

Free Convection Boundary Layer Flow Past a Horizontal Flat Plate Embedded in a Porous Medium Filled With a Nanofluid

2011 ◽  
Vol 133 (9) ◽  
Author(s):  
W. A. Khan ◽  
I. Pop
Keyword(s):  
Boundary Layer ◽  
Porous Medium ◽  
Brownian Motion ◽  
Free Convection ◽  
Flat Plate ◽  
Boundary Layer Flow ◽  
Convection Boundary Layer ◽  
Convection Boundary ◽  
Layer Flow ◽  
Free Convection Boundary Layer

A similarity solution is presented for the steady free convection boundary layer flow past a horizontal flat plate embedded in a porous medium filled with nanofluids. The model used for the nanofluid is the one which incorporates the effects of Brownian motion and thermophoresis. For the porous medium the Darcy-Boussinesq model is employed. This solution depends on a Lewis number Le, a buoyancy-ratio parameter Nr, a Brownian motion parameter Nb, and a thermophoresis parameter Nt. The effects of these parameters on the velocity, temperature and nanoparticle fraction profiles are discussed. The dependency of the local Nusselt and Sherwood numbers on these four parameters is also investigated.

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