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主页 旧刊 有关人员 未来大会 American Society of Thermal and Fluids Engineering

ISSN 在线: 2379-1748

ISBN 打印: 978-1-56700-517-2 (Flash drive)

5-6th Thermal and Fluids Engineering Conference (TFEC)
May, 26–28, 2021 , Virtual

A NUMERICAL STUDY OF ASSISTING MIXED CONVECTIVE HEAT TRANSFER FROM NARROW ISOTHERMAL INCLINED FLAT PLATES

Get access pages 893-900
DOI: 10.1615/TFEC2021.fnd.036652

摘要

Mixed convective heat transfer from narrow, thin, two-sided, inclined plates was studied. The relative plate width and the angle of plate inclination were expected to have a significant influence on the heat transfer rate from the plate and this was investigated. The forced flow was parallel to the plate surface. The upper and lower plate surfaces were isothermal and at the same temperature. The case where the buoyancy force component parallel to the plate surface was in the same direction as the forced flow was considered, i.e., assisting mixed convective flow was considered. The Boussinesq approach was adopted. Radiant heat transfer effects were neglected. The solution was obtained using the commercial CFD solver ANSYS FLUENT©. Mean heat transfer rates for the entire plate surface have been expressed in terms of Nusselt numbers based on the length of the plate. These Nusselt numbers are dependent on the Rayleigh number and the Reynolds number based on the plate length, on the ratio of the plate width to the plate length, on the plate inclination angle, and on the Prandtl number. Results have been obtained for a Prandtl number of 0.7 which is effectively the value for air. Variations of the Nusselt numbers with Rayleigh number and with Reynolds number for various plate inclination angles and for various dimensionless plate widths were obtained. The results show that the effect of the plate width can be very significant and that the magnitude of this effect is dependent on the plate inclination angle.
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