Vibrational Effect on Entropy Generation in a Square Porous Cavity

Entropy

Shohel Mahmud¹ 

[1] Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario Canada. Tel. [phone]; Fax [phone];

关键词: vibrational convection;    entropy generation;    porous media;    Bejan number;    square cavity;   

DOI  :  10.3390/e5050366

来源: mdpi

【 摘 要 】

We investigate the nature of entropy generation for natural convection in a two-dimensional square section enclosure vibrating sinusoidally perpendicular to the applied temperature gradient in a zero-gravity field. The enclosure is assumed to fill with porous media. The Darcy momentum equation is used to model the porous media. The full governing differential equations are simplified with the Boussinesq approximation and solved by a finite volume method. Whereas the Prandtl number Pr is fixed to 1.0. Results are presented in terms of average Nusselt number (Nu_av), entropy generation number (Ns_av), Bejan number (Be_av), and kinetic energy (KE_av).

【 授权许可】

Unknown   
© 2003 by MDPI (http://www.mdpi.org).