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A modified near wake dynamic model for rotor analysis

Published online by Cambridge University Press:  04 July 2016

T. Wang  and
F. N. Coton
T. Wang
Affiliation:
Department of Aerospace Engineering, University of GlasgowGlasgow, UK
F. N. Coton
Affiliation:
Department of Aerospace Engineering, University of GlasgowGlasgow, UK
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Abstract

The Beddoes near wake model, developed for high resolution blade vortex interaction computations, enables efficient numerical evaluation of the downwash due to trailed vorticity in the near wake of a helicopter rotor. The model is, however, limited by the assumption that the near wake lies in the plane of the rotor and, in some cases, by its inability to accurately evaluate the induced velocity contribution from vorticity trailed from inboard blade sections. In this paper, modifications to the method are proposed which address these issues and allow it to be used with confidence over a wider range of rotor flows.

Type
Technical Note
Information
The Aeronautical Journal , Volume 103 , Issue 1021 , March 1999 , pp. 143 - 146
Copyright
Copyright © Royal Aeronautical Society 1999 

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References

1. Beddoes, T.S. A near wake dynamic model, in proc of the AHS National specialists meeting on aerodynamics and acoustics, Feb 1987.Google Scholar
2. Beddoes, T.S. Two and three dimensional indicial methods for rotor dynamic airloads, in proc of the AHS National specialists meeting on rotorcraft dynamics, Arlington, Texas, 1989.Google Scholar
3. Leishman, J.G. and Beddoes, T.S., A semi-empirical model for dynamic stall, J Amer Heli Soc, July 1989, 34, (3).Google Scholar
4. Wang, T., Coton, F.N. and Galbraith, R.A.McD. An examination of two tower-shadow modelling strategies for downwind wind turbines, 36th AIAA Aerospace sciences meeting, Reno, January 1998.Google Scholar
5. Butterfield, C.P., Musial, W.P., Scott, G.N. and Simms, D.A. NREL combined experiment final report — phase II, National Renewable Energy Laboratory, NREL-TP-442-4807, August 1992.Google Scholar