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Effects of an Initial Gap on the Flow in a Turbulent Wall Jet

Published online by Cambridge University Press:  04 July 2016

K. Sridhar  and
P. K. C. Tu
K. Sridhar
Affiliation:
Department of Mechanical Engineering, University of Windsor, Canada
P. K. C. Tu
Affiliation:
Department of Mechanical Engineering, University of Windsor, Canada
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Summary

The flow in a two-dimensional plane wall jet with different initial gaps between the nozzle exit and the leading edge of the wall was probed at various stations along the jet. The jet slot thickness and the velocity were kept constant. It was found that the region close to the leading edge of the wall behaved like a transforming region where the type of flow changed from a free jet to a wall jet. The length of this region, which depended directly on the gap size, was so short for small gaps that the gap effects were found to be negligible. In addition, it was found that the inner layer velocity distribution of a wall jet did not follow the classic one-seventh power law.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 70 , Issue 666 , June 1966 , pp. 669 - 673
Copyright
Copyright © Royal Aeronautical Society 1966

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