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Non-uniform wall temperature effect of the flow and heat transfer of a hot circular air jet impinging on a circular cylinder
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 Title & Authors
Non-uniform wall temperature effect of the flow and heat transfer of a hot circular air jet impinging on a circular cylinder
Hong, Gi-Hyeok; Gang, Sin-Hyeong;
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 Abstract
A buoyant jet flow impinging on a circular cylinder is investigated including heat conduction through the cylinder. Temperature and flow fields are obtained by an iterative method, and the effects of the non-uniform wall temperature on the flow and heat transfer are analyzed. Effects of three-dimensionality and the traversing of the jet are also included. Nusselt number over the cylinder surface for the conjugate case is relatively small as compared with the constant wall temperature case due to the small temperature gradient. As the conductivity of the cylinder becomes lower, Nusselt number decreases due to the reduced temperature gradient. Increasing jet traversing speed causes the surface temperature of the cylinder to decrease, which increases local Nusselt number over the surface.
 Keywords
Circular Cylinder;Finite Volume Method;Hot Impinging Laminar Jet;Non- uniform Wall Temperature;Three-Dimensional Flow;Thermophoresis;
 Language
Korean
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