Effect of nonuniform heating on laminar mixed convection in ducts

Hin Sum Law, J. H. Masliyah, K. Nandakumar

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14 Scopus citations


Combined convection flow in square, circular, and semicircular ducts was numerically studied for axially uniform heat flux. The peripheral condition is that of the top half of the duct is insulated while the bottom half is heated. For the case of a square duct, dual solutions are obtained where the secondary flow is characterized either with two or four vortices. Regions of dual solutions have been mapped in the parameter space of aspect ratio and Grashof number. For the case of a circular duct, only the solution characterized by two vortices is obtained.

Original languageEnglish
Pages (from-to)131-137
Number of pages7
JournalJournal of Heat Transfer
Issue number1
StatePublished - Feb 1987
Externally publishedYes


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