Forced convection in a porous medium heated by a permeable wall perpendicular to flow direction: analyses and measurements

Authors
Citation
Ts. Zhao et Yj. Song, Forced convection in a porous medium heated by a permeable wall perpendicular to flow direction: analyses and measurements, INT J HEAT, 44(5), 2001, pp. 1031-1037
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN journal
0017-9310 → ACNP
Volume
44
Issue
5
Year of publication
2001
Pages
1031 - 1037
Database
ISI
SICI code
0017-9310(200103)44:5<1031:FCIAPM>2.0.ZU;2-C
Abstract
The forced convection in a saturated porous medium subjected to heating wit h a permeable wall perpendicular to the flow direction is investigated anal ytically. It is shown that the heat transfer rate from the permeable wall t o the fluid can be described by a simple equation: Nu = Pc. As compared wit h Nu proportional to Pe(1/2) for the case of boundary lay flow over a flat plate embedded in a porous medium, the linear relationship between Nu and P c indicates that heat transfer can be remarkably enhanced for the case when the fluid Row direction is opposite to the heat Row direction. To verify t he analytical solution, experiments were carried out in a porous structure consisting of glass beads heated by a finned surface. The analytical soluti on is shown to be reasonable agreement with the experimental data. (C) 2001 Elsevier Science Ltd. All rights reserved.