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On strong blowing into an incompressible airstream

Published online by Cambridge University Press:  29 March 2006

F. T. Smith
F. T. Smith
Affiliation:
Department of Engineering Science, Parks Road, Oxford Present address: Department of Mathematics, University of Southampton.
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Abstract

An experimental study of distributed air-injection from a porous section of a flat plate into a uniform incompressible airflow is described. The relative mass flow rates of the injection varied between 0·008 and 0·053 (strong injection) and the blowing was fairly uniformly distributed. In the resulting flow field, which was predominantly laminar except near the dividing streamline, where unsteadiness prevailed, velocity profile and pressure measurements were taken and the position of the dividing streamline thereby estimated. Overall the results agree fairly well with the steady laminar theory for strong normal blowing, outlined in §2, although for the strongest blow some signs of separation some way upstream of the blow are apparent.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 60 , Issue 2 , 4 September 1973 , pp. 241 - 255
Copyright
© 1973 Cambridge University Press

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