Transient mixed convection in horizontal porous layers locally heated from below

F. C. Lai, F. A. Kulacki

Research output: Contribution to journalConference article

7 Scopus citations

Abstract

Numerical results are presented for transient mixed convection in horizontal porous layers partially heated from below. The interaction between the buouyancy effects and forced flow, which evolves in time, has been examined. For a heat source whose length is greater than three times the layer's height, instability in the flow and temperature fields is due to the destruction and regeneration of recirculating cellular flows. The period of oscillation is found to be function of the Peclet number. The criteria for the approach to steady state convection are also discussed.

Original languageEnglish (US)
Pages (from-to)353-364
Number of pages12
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume96
StatePublished - Dec 1 1988
EventASME Proceedings of the 1988 National Heat Transfer Conference - Houston, TX, USA
Duration: Jul 24 1988Jul 27 1988

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