Mathematical modelling of complex heat transfer in a rectangular enclosure
G.V. Kuznetsov1, M.A. Sheremet2
1 Tomsk Polytechnic University, Tomsk, Russia
2 Tomsk State University, Tomsk, Russia, Michael-sher@yandex.ru
Keywords: conjugate heat transfer, natural convection, radiation, thermal conductivity, enclosure, Boussinesq approximation, Rosseland approximation
Pages: 123-133
Abstract
Numerical simulation of convective-radiative heat transfer in an enclosure with a heat source in the presence of heat-conducting walls of the finite thickness was carried out. The distributions of both local (streamlines, temperature fields) and integral (mean Nusselt numbers at typical interfaces) characteristics describing specific features of the investigated process in a real range of the variation of determining parameters were obtained. The radiation influence scales at thermal modes formation were determined. The effect of transient factor on the fields development of both hydrodynamic and thermodynamic characteristics was analysed. Correlation ratios for determining the mean Nusselt number at solid-gas interfaces were obtained depending on the Grashof number.
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