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Calculation of tunnel wall interference from wall-pressure measurements

Published online by Cambridge University Press:  04 July 2016

P. R. Ashill  and
R. F. A. Keating
P. R. Ashill
Affiliation:
Aerodynamics Department , Royal Aircraft Establishment, Bedford
R. F. A. Keating
Affiliation:
Aerodynamics Department , Royal Aircraft Establishment, Bedford
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Summary

A method is described for calculating wall interference in solid-wall wind tunnels from measurements of static pressures at the walls. Since it does not require a simulation of the model flow, the technique is particularly suited to determining wall interference for complex flows such as those over VSTOL aircraft, helicopters and bluff shapes (e.g. cars and trucks). An experimental evaluation shows that the method gives wall-induced velocities which are in good agreement with those of existing methods in cases where these techniques are valid, and illustrates its effectiveness for inclined jets which are not readily modelled.

Type
Research Article
Information
The Aeronautical Journal , Volume 92 , Issue 911 , January 1988 , pp. 36 - 53
Copyright
Copyright © Royal Aeronautical Society 1988 

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