Finite-element analyses of natural convections across horizontal air-filled cavities each surrounding a heated pipe

R. F. Babus'Haq and S. D. Probert

Applied Energy, 1988, vol. 30, issue 1, 15-28

Abstract: The Galerkin approach of the finite-element method has been used to solve the non-linear partial-differential equations, which describe natural convection within a horizontal air-filled cavity. Steady-state rates of heat transfer were predicted for various positions of a relatively-hot pipe within either a circular or a rectangular cross-sectioned enclosure. Solutions were obtained for a range of Rayleigh numbers of the air flow, and an optimal location of the inner pipe (corresponding to its minimum rate of heat loss) was predicted. Good agreement with previously-obtained experimental observations was achieved.

Date: 1988
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