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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-421-2

International Heat Transfer Conference 15
August, 10-15, 2014, Kyoto, Japan

Laminar, Transitional, and Turbulent Mixed Convective Heat Transfer from a Thin Inclined Plate Having a Uniform Surface Heat Flux

Get access (open in a dialog) DOI: 10.1615/IHTC15.fcv.008497
pages 2927-2937

Abstract

When there is a forced flow over a heated or cooled body the temperature differences in the flow lead to the existence of buoyancy forces that can significantly affect the flow. Such flows are termed mixed- or combined convective flows. The effect of the buoyancy forces on the flow over a thin flat plate having a uniform surface heat flux and which is set at an angle to the vertical has here been studied. The forced flow is parallel to the surface of the plate while the buoyancy forces act in the vertical direction, the buoyancy forces thus acting at an angle to the forced flow. A heated flat plate has been considered. Attention has been restricted to the case where the buoyancy force component parallel to the plate surface acts in the same direction as the forced flow, i.e., attention has been given to assisting flow. Conditions under which laminar, transitional, and turbulent flow can occur have been considered. A numerical study of this flow situation has been undertaken, the main aim of the study being to determine how the mean Nusselt number varies with inclination angle, Reynolds number, and heat flux Rayleigh number. Results have only been obtained for a Prandtl number of 0.74. The solution has been obtained by numerically solving the governing equations using a commercial CFD solver. The results have been used to determine the conditions under which mixed convection exists and an equation for the Nusselt number under these conditions has been derived.