On the Temperature Slip Boundary Condition in a Mixed Convection Boundary-Layer Flow in a Porous Medium

2012 ◽  
Vol 94 (1) ◽  
pp. 133-147 ◽  
Author(s):  
John H. Merkin ◽  
Azizah Mohd Rohni ◽  
Syakila Ahmad ◽  
Ioan Pop
Keyword(s):  
Boundary Layer ◽  
Boundary Condition ◽  
Porous Medium ◽  
Mixed Convection ◽  
Boundary Layer Flow ◽  
Slip Boundary Condition ◽  
Convection Boundary Layer ◽  
Slip Boundary ◽  
Convection Boundary ◽  
Layer Flow

Mixed Convection Boundary Layer Flow Near the Lower Stagnation Point of a Cylinder Embedded in a Porous Medium Using a Thermal Nonequilibrium Model

2016 ◽  
Vol 138 (8) ◽  
Author(s):  
Haliza Rosali ◽  
Anuar Ishak ◽  
Ioan Pop
Keyword(s):  
Boundary Layer ◽  
Porous Medium ◽  
Differential Equations ◽  
Mixed Convection ◽  
Stagnation Point ◽  
Boundary Layer Flow ◽  
Thermal Conductivity Ratio ◽  
Convection Boundary Layer ◽  
Convection Boundary ◽  
Layer Flow

The present paper analyzes the problem of two-dimensional mixed convection boundary layer flow near the lower stagnation point of a cylinder embedded in a porous medium. It is assumed that the Darcy's law holds and that the solid and fluid phases of the medium are not in thermal equilibrium. Using an appropriate similarity transformation, the governing system of partial differential equations are transformed into a system of ordinary differential equations, before being solved numerically by a finite-difference method. We investigate the dependence of the Nusselt number on the solid–fluid parameters, thermal conductivity ratio and the mixed convection parameter. The results indicate that dual solutions exist for buoyancy opposing flow, while for the assisting flow, the solution is unique.

Sign in / Sign up

Export Citation Format

Share Document