Effects of flow inertia on vertical, natural convection in saturated, porous media

K. S. Chen, J. R. Ho

研究成果: 雜誌貢獻期刊論文同行評審

33 引文 斯高帕斯(Scopus)

摘要

An analytical study is made for the effect of flow inertia on vertical, natural convection in saturated, porous media. Within the framework of boundary-layer approximations, Forchheimer's model was transformed into a set of non-similar equations. Effects of flow inertia are measured and examined in terms of the dimensionless inertia parameter ξ = GrxFox where Grx is the local Grashof number of determined by the bulk properties of saturated porous media, and Fox is a new dimensionless parameter governed by the microstructure of porous matrix. The non-similar solutions are presented and discussed for two types of flow: (1) the uniform heat flux surface; and (2) plane plume flows. Results show that thermal boundary layer in the non-Darcy regime is thicker than the corresponding pure-Darcy flow. In addition, the local wall heat fluxes for the first case and the maximum temperature gradient for the second case decrease with increasing ξ.

原文???core.languages.en_GB???
頁(從 - 到)753-759
頁數7
期刊International Journal of Heat and Mass Transfer
29
發行號5
DOIs
出版狀態已出版 - 5月 1986

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