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On the effect of uniform suction on stability and transition in zero pressure gradient viscous incompressible flow

Published online by Cambridge University Press:  04 July 2016

D. I. A. Poll ,
S. A. Walsh  and
M. C. Gallagher
D. I. A. Poll
Affiliation:
College of Aeronautics Cranfield University Cranfield UK
S. A. Walsh
Affiliation:
College of Aeronautics Cranfield University Cranfield UK
M. C. Gallagher
Affiliation:
College of Aeronautics Cranfield University Cranfield UK
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Abstract

The classic problem of stability and transition to turbulence of an incompressible flow over a flat plate subjected to uniform suction through the surface is considered. This is an important “model” problem for laminar flow control and the results have direct application to the design of low drag aerofoils. Detailed mean boundary layer calculations are presented and the flow stability is determined by obtaining numerical solutions of the Orr-Somerfield equation. Transition conditions are estimated by using the semi-empirical en method. Accurate values have been obtained for the levels of suction necessary to delay instability and transition indefinitely. Consideration has also been given to the effect of surface suction upon the plate drag.

Type
Research Article
Information
The Aeronautical Journal , Volume 100 , Issue 995 , May 1996 , pp. 143 - 150
Copyright
Copyright © Royal Aeronautical Society 1996 

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