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Effect of Shock Boundary Layer Interaction on Aerofoil Pressure Distributions at Transonic Speeds

Published online by Cambridge University Press:  04 July 2016

D. Tirumalesa*
Affiliation:
National Aeronautical Laboratory, Bangalore

Summary

A method of improving pressure distributions predicted by inviscid theory over two-dimensional aerofoils at transonic speeds taking into account shock-wave turbulent boundary layer interaction as obtained in the case of the flat plate is described.

The method was applied to a non-lifting circular arc aerofoil of eight per cent relative thickness. The shock wave location, pressure distribution and drag coefficient were calculated and compared with experimental and inviscid theoretical results.

It has been found that the method gives results which are consistent with experimental results in various aspects.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1963

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References

1.Spreiter, J. R.et al. Theoretical Predictions of Pressure Distributions on Non-Lifting Airfoils at High Subsonic Speeds. NACA Rep. 1217, 1955; also NACA TN 4148, 1958; and NACA Rep. 1359, 1958.Google Scholar
2.Rotta, J. Druckverteilungsrechnungen an Symmetrischen Flugelprofilen mit Verschiedener Dickenrucklage bei Hohen Unterschallgeschwindigkeiten. AVA Forschungsbericht, Nr. 61-02. Google Scholar
3.Hosokawa, I. Studies on the Small Disturbance Theory of Transonic Flow — Non - Linear Correction Theory. TR-9T, National Aero Lab., Tokyo, Japan, 1962.Google Scholar
4.Sinnott, C. S.el al. Review and Extension of Transonic Airfoil Theory. ARC R & M No. 3156, 1961.Google Scholar
5.Hakkinen, R. J.et al. The Interaction of an Oblique Shock Wave with a Laminar Boundary Layer. NASA Memo. 2-18-59W, 1959.Google Scholar
6.Barry, F. W.et al.The Interaction of Shock Waves with Boundary Layers on a Flat Surface. J. Aero. Sc., Vol. 18, p. 229, 1951.Google Scholar
7.Gadd, G. E. The Interaction Between a Weak Normal Shock Wave and a Turbulent Boundary Layer. ARC CP No. 424, 1957.Google Scholar
8.Gadd, G. E. Interactions Between Normal Shock Waves and Turbulent Boundary Layers. ARC R & M No. 3262.Google Scholar
9.Gadd, G. E. The Effects of Convex Surface Curvature on Boundary Layer Separation in Supersonic Flow. ARC CP No. 289, 1956.Google Scholar
10.Greber, I. Shock Wave Laminar Boundary Layer Interaction on a Convex Wall. NASA TN D-512, 1960.Google Scholar
11.Michel, R. Etude Experimentale de la Couche Limite Turbulente et de son Interaction avec l'Onde de Choc sur un Demi-Profil en Ecoulement Transsonique. ONERA Note Tech. No. 47, 1958.Google Scholar
12.Pearcey, H. H. Some Effects of Shock Induced Separation of Turbulent Boundary Layers in Transonic Flow Past Aerofoils. ARC R & M No. 3108, 1959.Google Scholar
13.Michel, R.et al. Etude des Ecoulements Transsoniques au Tour des Profils Lenticulaires a Incidence Nulle. ONERA Publication No. 72, 1954.Google Scholar
14.Rnechtel, E. D. Experimental Investigation at Transonic Speeds of Pressure Distributions over Wedge and Circular Arc Airfoil Sections and Evaluation of Perforated Wall Interference, NASA TN D-15, 1959.Google Scholar
15.Stratford, B. S.et al. The Calculation of the Compressible Turbulent Boundary Layer in an Arbitrary Pressure Gradient —A Correlation of Certain Previous Methods. ARC R & M No. 3207, 1961.Google Scholar