Forced Convection in High Porosity Metal Foams
Author:
Calmidi V. V.1, Mahajan R. L.1
Affiliation:
1. CAMPmode, Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, CO 80309-0427
Abstract
This paper reports an experimental and numerical study of forced convection in high porosity (ε∼0.89–0.97) metal foams. Experiments have been conducted with aluminum metal foams in a variety of porosities and pore densities using air as the fluid medium. Nusselt number data has been obtained as a function of the pore Reynolds number. In the numerical study, a semi-empirical volume-averaged form of the governing equations is used. The velocity profile is obtained by adapting an exact solution to the momentum equation. The energy transport is modeled without invoking the assumption of local thermal equilibrium. Models for the thermal dispersion conductivity, kd, and the interstitial heat transfer coefficient, hsf, are postulated based on physical arguments. The empirical constants in these models are determined by matching the numerical results with the experimental data obtained in this study as well as those in the open literature. Excellent agreement is achieved in the entire range of the parameters studied, indicating that the proposed treatment is sufficient to model forced convection in metal foams for most practical applications. [S0022-1481(00)01903-4]
Publisher
ASME International
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference26 articles.
1. Kaviany, M., 1991, Principles of Heat Transfer in Porous Media, Springer-Verlag, New York. 2. Hunt, M. L., and Tien, C. L., 1988, “Effects of Thermal Dispersion on Forced Convection in Fibrous Media,” Int. J. Heat Mass Transf., 31, pp. 301–309. 3. Sathe, S. B., Peck, R. E., and Tong, T. W., 1990, “A Numerical Analysis of Heat Transfer and Combustion in Porous Radiant Burners,” Int. J. Heat Mass Transf., 33, No. 6, pp. 1331–1338. 4. Lee, Y. C., Zhang, W., Xie, H., and Mahajan, R. L., 1993, “Cooling of a FCHIP Package With 100 W, 1 cm2 Chip,” Proceedings of the 1993 ASME Int. Elec. Packaging Conf., Vol. 1, ASME, New York, pp. 419–423. 5. Calmidi, V. V., and Mahajan, R. L., 1999, “The Effective Thermal Conductivity of High Porosity Fibrous Metal Foams,” ASME J. Heat Transfer, 121, pp. 466–471.
Cited by
889 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|