학술논문

Numerical Simulation of Williamson Combined Natural and Forced Convective Fluid Flow between Parallel VerticalWalls with Slip Effects and Radiative Heat Transfer in a Porous Medium.
Document Type
Article
Source
Entropy. 2016, Vol. 18 Issue 4, p147. 15p.
Subject
*POROUS materials
*CONVECTIVE flow
*FLUID mechanics
*HEAT radiation & absorption
*COMPUTER simulation
Language
ISSN
1099-4300
Abstract
Numerical study of the slip effects and radiative heat transfer on a steady state fully developed Williamson flow of an incompressible Newtonian fluid; between parallel vertical walls of a microchannel with isothermal walls in a porous medium is performed. The slip effects are considered at both boundary conditions. Radiative highly absorbing medium is modeled by the Rosseland approximation. The non-dimensional governing Navier-Stokes and energy coupled partial differential equations formed a boundary problem are solved numerically using the fourth order Runge-Kutta algorithm by means of a shooting method. Numerical outcomes for the skin friction coefficient, the rate of heat transfer represented by the local Nusselt number were presented even as the velocity and temperature profiles illustrated graphically and analyzed. The effects of the temperature number, Grashof number, thermal radiation parameter, Reynolds number, velocity slip length, Darcy number, and temperature jump, on the flow field and temperature field and their effects on the boundaries are presented and discussed. [ABSTRACT FROM AUTHOR]