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多孔介质期刊
影响因子: 1.49 5年影响因子: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN 打印: 1091-028X
ISSN 在线: 1934-0508

多孔介质期刊

DOI: 10.1615/JPorMedia.v3.i3.60
11 pages

Forced Convection in a Couette Flow in a Composite Duct: An Analysis of Thermal Dispersion and Non-Darcian Effects

Ming Xiong
Department of Mechanical and Aerospace Engineering, North Carolina State University, Campus Box 7910, Rayleigh, North Carolina 27695-7910, USA

ABSTRACT

In this article an analysis of fluid flow and heat transfer in a fully developed Couette flow through a composite channel that is partly filled with a clear fluid and partly with a fluid-saturated porous medium is presented. The porous medium is attached to a fixed plate and uniform heat fluxes of different intensities are imposed on both plates. The momentum transport is described by the Brinkman−Forchheimer−Darcy equation and the effect of transverse thermal dispersion is accounted for in the energy equation for the porous region. An analytical solution for the fluid flow is obtained utilizing the boundary layer technique. The temperature field and the Nusselt numbers at the upper and lower plates are obtained by direct numerical integration. The dependence of the Nusselt numbers on the thickness of the porous region, the ratio of heat fluxes on both plates, and the Darcy number is investigated.


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