Effect of thermophoresis particle deposition in free convection boundary layer from a vertical flat plate embedded in a porous medium

2004 ◽  
Vol 31 (3) ◽  
pp. 421-430 ◽  
Author(s):  
Ali J. Chamkha ◽  
I Pop
Keyword(s):  
Boundary Layer ◽  
Porous Medium ◽  
Free Convection ◽  
Flat Plate ◽  
Particle Deposition ◽  
Convection Boundary Layer ◽  
Convection Boundary ◽  
Thermophoresis Particle Deposition ◽  
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.

scholarly journals Combined of magnetic field and thermophoresis particle deposition in free convection boundary layer from a vertical flat plate embedded in a porous medium

2007 ◽  
Vol 11 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Yousof Bakier ◽  
Ahmed Mansour
Keyword(s):  
Magnetic Field ◽  
Boundary Layer ◽  
Porous Medium ◽  
Flat Plate ◽  
Particle Deposition ◽  
Saturated Porous Medium ◽  
Convection Boundary Layer ◽  
Similarity Equation ◽  
Thermophoresis Particle Deposition ◽  
Vertical Flat Plate

Deals with heat and mass transfer by steady laminar boundary layer flow of Newtonian, viscous fluid over a vertical flat plate embedded in a fluid-saturated porous medium in the presence of thermophoretic and magnetic field. The resulting similarity equation are solved by finite difference marching technique. The nature of variation of particle concentration profile and magnetic field with respect to buoyancy force, Fw, and Prandtl number is found to be similar. Comparisons with previous published work are performed and the results are found to be in excellent agreement. .

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