Abonnement à la biblothèque: Guest
Proceedings of CHT-08 ICHMT International Symposium on Advances in Computational Heat Transfer
May, 11-16, 2008, Marrakesh, Morocco

DOI: 10.1615/ICHMT.2008.CHT


ISBN Print: 978-1-56700-253-9

ISSN: 2578-5486

NUMERICAL PREDICTION FOR TURBULENT FLOW IN POROUS MEDIA MODIFIED κ-ε MODEL

page 13
DOI: 10.1615/ICHMT.2008.CHT.1250
Get accessGet access

RÉSUMÉ

This present work describes a modified κ-ε model for turbulent flow in porous media. The governing equations are obtained by time averaging the volume-averaged equations (time-averaging theory).This modified model accounts for the second order approximation in the Forchheimer terms. This higher order term leads to a better description of the turbulent effects of the Forchheimer term in the flow through the porous media. As an application example, a turbulent flow in an annular heat exchanger with a porous substrate attached to the inner cylinder is analysed. A control volume approach is employed for discretizing the governing equations. The set of the discretized linear algebraic equations are solved using the line by line method. A good agreement is obtained for the validation case. The effect of the flow rate ratio between the cold and hot fluids is analyzed.

Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections Prix et politiques d'abonnement Begell House Contactez-nous Language English 中文 Русский Português German French Spain