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Inviscid and viscous simulations of spoiler performance

Published online by Cambridge University Press:  04 July 2016

C. Xu ,
W. W. H. Yeung  and
R. W. Guo
C. Xu
Affiliation:
Department of Mechanical EngineeringUniversity of Wisconsin, Milwaukee, USA
W. W. H. Yeung
Affiliation:
School of Mechanical and Production EngineeringNanyang Technological University, Singapore
R. W. Guo
Affiliation:
Department of Power EngineeringNanjing University of Aeronautics and Astronautics, China
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Abstract

Inviscid and viscous computational models have been used to predict two-dimensional steady separated flow around an aerofoil with a spoiler. First, an attempt is made to construct an inviscid panel method in which piece-wise linear vortex panels are placed on the aerofoil and spoiler. The separated region is modelled with potential flow analysis by using free vortex sheets placed on the separation streamline from the spoiler tip and aerofoil trailing-edge. The shapes of the vortex sheets require an iteration to be established. The calculation is based on an assumption of the length of the free vortex sheets. Second, a viscous procedure based on a finite control volume scheme is used to solve the Navier-Stokes equations for turbulent flow by making used of the k-ε model. An algebraic pressure correction is incorporated in the calculation. The predictions from the two models are in reasonable agreement with experimental measurements.

Type
Research Article
Information
The Aeronautical Journal , Volume 102 , Issue 1017 , September 1998 , pp. 399 - 405
Copyright
Copyright © Royal Aeronautical Society 1998 

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References

1. Woods, L.C. Theory of aerofoils on which occur bubbles of stationary air, ARC R&M 3049, 1953.Google Scholar
2. Pfeiffer, N.J. and Zumwalt, G.W. Computational model for low speed flows past aerofoils with spoilers, A1AA J, 20, (3), pp 376–381.Google Scholar
3. Woods, L.C. Theory of aerofoil spoilers, ARC R&M 2969, 1953.Google Scholar
4. Barnes, C.S. A developed theory of spoiler on aerofoils, ARC CP 887, 1965.Google Scholar
5. Jandali, T. and Parkinson, G.V. A potential flow theory for airfoil spoilers. Trans CASI, March 1970, 1, (3).Google Scholar
6. Parkinson, G.V. and Yeung, W.A. Wake source model for airfoils with separated flow, J FIuid Mech, 1987, 179, pp 41–57.Google Scholar
7. Tou, H.B. and Hancock, G.J. Inviscid theory of two-dimensional aerofoil/spoiler configurations at low speed, Part 1: Some experiences on simple panel methods applied to attached and separated flows, Part II: Steady aerofoil-spoiler characteristics, Aeronaut J, October 1987, 91, (908), pp 350–366.Google Scholar
8. Maskew, B. and Dvorak, F.A. The prediction of CLmax using a separated flow model, J Am Heli Soc, 1978, 23, pp 2–8.Google Scholar
9. Lewis, R.I. Vortex Element Methods for Fluid Dynamic Analysis of Engineering Systems, Cambridge University Press, 1991.Google Scholar
10. Parkinson, G.V. and Tam Doo, P. Prediction of aerodynamic effects of spoilers on wings, AGARD CP 204, 1976.Google Scholar
11. Elkaim, D., Reggio, M. and Camarero, R. Simulating two-dimensional turbulent flow by using the k-ε model and the vorticity-strcamfunction formulation, Int J Numer Methods in Fluids, 1992, 14, pp 961–980.Google Scholar
12. Amano, R.S. Development of a turbulence near-wall model and its application to separated and reattached flows. Numerical Heat Transfer, 1984, 7, pp 59–75.Google Scholar
13. Thompson, J.F., Warsi, Z.U.A. and Mastin, C.W. Numerical Grid Generation: Foundations and Applications, North-Holland: Elsevier Science Publishing, 1985.Google Scholar
14. Patankar, S.V. Numerical Heat Transfer and Fluid Flow, Hemisphere/McGraw-Hill, New York, 1980.Google Scholar
15. Pun, W.M. and Spalding, D.B.A. General computer program for two dimensional elliptic flows. Imperial College, London, Mechanical Engineering Report HTS/76/2, 1976.Google Scholar
16. Xu, C. and Guo, R.W. An effective method for numerical simulations of separated flows, Acta Aerodynamica Sinica, 1994, 12, pp 363–367.Google Scholar