Natural convection in vertical heat-generating porous annuli

C. Y. Choi, F. C. Lai, F. A. Kulacki

Research output: Contribution to journalConference articlepeer-review


The purpose of the present study is to numerically investigate the heat transfer process occurring in porous annuli by taking both inertial and viscous effects into account. Each of these effects is first considered separately; thus, the individual contribution to the overall transport can be assessed. Finally, the influence of the combined effects is fully explored. A finite difference algorithm has been developed to solve the governing partial differential equations. Calculations cover a wide range of Rayleigh number(Ra), radius ratio parameter(γ), and aspect ratio(A), i.e., 10≤ Ra ≤ 104, 0 ≤ γ ≤ 100 and 0.5 ≤ A ≤ 10. Non-Darcy effects on the flow and temperature fields are carefully examined and compared with those obtained by the Darcy analysis.

Original languageEnglish (US)
Pages (from-to)71-76
Number of pages6
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
StatePublished - Jan 1 1990
EventNumerical Heat Transfer - Presented at AIAA/ASME Thermophysics and Heat Transfer Conference - Seattle, WA, USA
Duration: Jun 18 1990Jun 20 1990


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