MIXED CONVECTION IN HORIZONTAL POROUS LAYERS: EFFECTS OF THERMAL BOUNDARY CONDITIONS.

F. C. Lai, F. A. Kulacki, V. Prasad

Research output: Contribution to journalConference article

6 Scopus citations

Abstract

Numerical results are reported for steady-state mixed convection in a two-dimensional horizontal porous layer with localized heating from below. The focus of this study is on the effects caused by the thermal boundary conditions. The effects of the induced flow on temperature field, flow structure, and heat transfer rates are also examined for a wide range of Rayleigh and Peclet numbers. It has been observed that the overall Nusselt numbers for the cases of an isothermally cooled bottom wall is always higher than that for an insulated bottom wall. However, the difference which is significant in the natural convection regime becomes almost indistinguishable as the strength of forced flow is increased.

Original languageEnglish (US)
Pages (from-to)91-96
Number of pages6
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume84
StatePublished - Dec 1 1987

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