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Blockage Corrections for Blunt-Based Bodies of Revolution

Published online by Cambridge University Press:  04 July 2016

J. R. Calvert
J. R. Calvert*
Affiliation:
Engineering Laboratory, University of Cambridge
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Extract

Maskell has developed a theory for the blockage effects of bluff bodies in a closed wind tunnel and has shown that it gives good results for flat plates normal to a stream. For streamline bodies there are well established methods of calculating the corrections, but for long bodies with blunt bases it is not obvious what method should be used.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 70 , Issue 664 , April 1966 , pp. 532 - 533
Copyright
Copyright © Royal Aeronautical Society 1966

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References

1.Maskell, E. C. A theory of the blockage effects on bluff bodies and stalled wings in a closed wind tunnel. ARC R & M 3400, 1965.Google Scholar
2.Pankhurst, R. C. and Holder, D. W.Wind Tunnel Technique. Pitman, 1952, Chapter 8.Google Scholar
3.Evans, J. Y. G. Corrections to velocity for wall constraint in any 10 x 7 rectangular subsonic wind tunnel. ARC R. & M 2662, 1953.Google Scholar