Unsteady free convection-radiation flow over a vertical wall embedded in a porous medium

✍ Scribed by Zueco, Joaquín

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 372 KB
• Volume: 24
• Category: Article
• ISSN: 1069-8299
• DOI: 10.1002/cnm.1016

✦ Synopsis

Abstract

A numerical solution for the transient two‐dimensional free convection flow of viscous dissipative fluid over an infinite vertical plate through a porous medium bounded, taking into account the thermal radiation, is analysed. The fluid is grey, and acts as a radiation emitting and absorbing (but non‐scattering) medium. The influence of the non‐dimensional parameters such as the Forchheimer coefficient (Fo), the permeability parameter (P), the Eckert number (Ec) and the radiation parameter (R) on the velocity, temperature, Nusselt number and on the time taken to reach the steady state is studied. The possibility of non‐Darcy flow is also analysed. The numerical method employed, network simulation method, is based on an electro‐thermal analogy and permits the direct visualization and evolution of the local and/or integrated transport variables (velocities, temperatures and fluxes) at any point or section of the medium. The numerical solutions of this work have been compared with the existing information in the literature with good agreement. Copyright
© 2007 John Wiley & Sons, Ltd.