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A gas jet impacting a cavity

Published online by Cambridge University Press:  21 April 2006

A. Kent Stiffler  and
Hazoor Bakhsh
A. Kent Stiffler
Affiliation:
Mechanical Engineering Department, Mississippi State University, MS 39762, USA
Hazoor Bakhsh
Affiliation:
Research Institute, University of Petroleum and Minerals, Dhahran, Saudi Arabia
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Abstract

A subsonic air jet impinging upon a cavity is studied to explain the resultant heating phenomenon. Flow visualization within the cavity shows a large central vortex dominating the flow pattern. Velocity measurements inside the cavity are made using a hot-wire anemometer. Temperature is measured with a copper-constantan thermocouple. The velocity field within the cavity is described by a modified Rankine combined vortex. An uncommon form of the energy equation is used to account for turbulent heating in adverse pressure gradients. A theoretical solution is developed to model the temperature field in the cavity. There is a good agreement between the calculated and measured temperatures. The heating effect is related to Ranque-Hilsch tubes.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 172 , November 1986 , pp. 127 - 141
Copyright
© 1991 Cambridge University Press

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