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Chordwise Variation of Vorticity: A Comparison of Approximations for Use in Panel Methods

Published online by Cambridge University Press:  07 June 2016

J A H Petrie
J A H Petrie*
Affiliation:
Hawker Siddeley Aviation Limited, Brough, and, University of Leeds
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Summary

Based on computing efficiency, a comparison is made of three different ways of representing the chordwise variation of bound vorticity for use in panel methods. Because of expense, the two-dimensional analogues of the three-dimensional models were used and the results assumed to hold in both situations. A constant panel of vorticity is found to have inherent difficulties which make it unattractive to use. A linearly varying vorticity model is found to be best but a model using line vortices is almost as good and, moreover, simpler to use.

Type
Research Article
Information
Aeronautical Quarterly , Volume 28 , Issue 4 , November 1977 , pp. 265 - 270
Copyright
Copyright © Royal Aeronautical Society. 1977

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References

1 Maskew, B Numerical lifting surface methods for calculating the potential flow about wings and wing-bodies of arbitrary geometry. Loughborough University PhD thesis, 1972.Google Scholar
2 Maskew, B A subvortex technique for the close approach to a discretized vortex sheet. NASA TMX-62 487, 1975.Google Scholar
3 Glauert, H The Elements of Aerofoil and Airscrew Theory. Cambridge University Press, 1946.Google Scholar
4 Roberts, A Rundle, K Computation of incompressible flow about arbitrary wing-body combinations. British Aircraft Corporation (Weybridge) Report MA 19, 1972.Google Scholar