Numerical Prediction of the Flow Field and Impingement Heat Transfer Caused by a Laminar Slot Jet

[+] Author and Article Information
A. R. P. van Heiningen, A. S. Mujumdar, W. J. M. Douglas

Department of Chemical Engineering, McGill University, Pulp and Paper Research Institute of Canada, Montreal, Canada

J. Heat Transfer 98(4), 654-658 (Nov 01, 1976) (5 pages) doi:10.1115/1.3450615 History: Received September 01, 1976; Online August 11, 2010


The effects of uniform suction and nozzle exit velocity profile on the flow and heat-transfer characteristics of a semiconfined laminar impinging slot jet were investigated numerically. The full Navier-Stokes and energy equations were solved using a hybrid or upwind finite-difference representation of the equations cast into their vorticity-stream-function form. The importance of the nozzle exit profile is shown by comparison of the computed heat-transfer distribution with the available experimental data in the laminar range. Application of suction at the impingement surface is shown to enhance the local heat-transfer rates by a constant amount. The nondimensional heat-transfer coefficient and skin friction at the plate are computed as functions of the nozzle Reynolds number, the suction rate, and the nozzle velocity profile. The effect of temperature-dependent physical properties is included in the analysis.

Copyright © 1976 by ASME
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