Paper Title:
Numerical Investigation of Impingement Heat Transfer Enhancement on a Flat Plate with an Attached Porous Medium
  Abstract

The enhancement of impingement heat transfer on a flat plate covered with a thick layer of porous medium with or without a center hole was numerically investigated. The renormalization group turbulence model is selected for the fluid region while Forchheimer extended Darcy’s model is used for porous region. The numerical models were justified by comparisons with available experimental data. Computational results show that an attached porous medium with a center hole can effectively enhance jet impingement heat transfer while an attached thick porous layer without a center hole has detrimental effect. The physics of these results are supported and well explained by the detailed flow patterns. The most influential parameters in this heat transfer process include the jet Reynolds number and the center hole geometry (hole depth and jet-to-hole diameter ratio). A good hole geometry should well trap the jet and direct the coolant along the heated plate.

  Info
Periodical
Defect and Diffusion Forum (Volumes 312-315)
Edited by
Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado
Pages
477-482
DOI
10.4028/www.scientific.net/DDF.312-315.477
Citation
P. S. Wu, Y. W. Lo, F. C. Cheng, "Numerical Investigation of Impingement Heat Transfer Enhancement on a Flat Plate with an Attached Porous Medium", Defect and Diffusion Forum, Vols. 312-315, pp. 477-482, 2011
Online since
April 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Vítor A.F. Costa
Abstract:The complete and simultaneous simulation of the overall filling and curing processes is presented. Fluid flow in the porous medium is...
33
Authors: M. Abkar, P. Forooghi, A. Abbassi
Abstract:In this paper, forced convection in a channel lined with a porous layer is investigated. The main goal is to assess the effect of local...
33
Authors: Yang Shuai Liu, Ji Huan He
Chapter 10: Finishing Technology
Abstract:A mathematical model for a vehicle moving along a soft porous mat is established using aerodynamics and lubrication theories, and numerical...
1535
Authors: Ren Xing Liu, Akira Nakayama, Xiao Lan Haung
Chapter 14: Multi-Field Coupling Theory and its Applications
Abstract:As a sequel to the study in determining the permeability of the porous media composed of obstacles of different sizes, exhaustive numerical...
2537
Authors: Jin Yan Zhang, Hong Sheng Liu, Zhen Jie Xu
Chapter 1: Engineering Thermophysics
Abstract:The phenomenon of combustion of a gaseous mixture in a two-dimension alumina ( ) particle packed bed porous media burner is studied by means...
73