期刊
TRANSPORT IN POROUS MEDIA
卷 68, 期 3, 页码 301-319出版社
SPRINGER
DOI: 10.1007/s11242-006-9049-4
关键词
viscous dissipation; forced convection; channel; Brinkman-Brinkman problem
Forced convection with viscous dissipation in a parallel plate channel filled by a saturated porous medium is investigated numerically. Three different viscous dissipation models are examined. Two different sets of wall conditions are considered: isothermal and isoflux. Analytical expressions are also presented for the asymptotic temperature profile and the asymptotic Nusselt number. With isothermal walls, the Brinkman number significantly influences the developing Nusselt number but not the asymptotic one. At constant wall heat flux, both the developing and the asymptotic Nusselt numbers are affected by the value of the Brinkman number. The Nusselt number is sensitive to the porous medium shape factor under all conditions considered.
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