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Flow separation on a spheroid at incidence

Published online by Cambridge University Press:  19 April 2006

Taeyoung Han  and
V. C. Patel
Taeyoung Han
Affiliation:
Institute of Hydraulic Research, University of Iowa, Iowa City
V. C. Patel
Affiliation:
Institute of Hydraulic Research, University of Iowa, Iowa City
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Abstract

Surface streamline patterns on a spheroid have been examined at several angles of attack. Most of the tests were performed at low Reynolds numbers in a hydraulic flume using coloured dye to make the surface flow visible. A limited number of experiments was also carried out in a wind tunnel, using wool tufts, to study the influence of Reynolds number and turbulent separation. The study has verified some of the important qualitative features of three-dimensional separation criteria proposed earlier by Maskell, Wang and others. The observed locations of laminar separation lines on a spheroid at various incidences have been compared with the numerical solutions of Wang and show qualitative agreement. The quantitative differences are attributed largely to the significant viscous-inviscid flow interaction which is present, especially at large incidences.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 92 , Issue 4 , 27 June 1979 , pp. 643 - 657
Copyright
© 1979 Cambridge University Press

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References

Chang, K. C. & Patel, V. C. 1975 Calculations of three-dimensional boundary layers on ship forms. Iowa Inst. Hydraul. Res., Univ. Iowa, IIHR Rep. no. 178.Google Scholar
Han, T. & Patel, V. C. 1977 Flow visualization of three-dimensional boundary-layer separation on bodies of revolution at incidence. Iowa Inst. Hydraul. Res., Univ. Iowa, IIHR Rep. no. 205.Google Scholar
Lighthill, M. J. 1963 Laminar Boundary Layers ed. L. Rosenhead), pp. 46–113. Oxford: Clarendon Press.
Maskell, E. C. 1955 Flow separation in three dimensions. Brit. R.A.E. Rep. Aero 2565.Google Scholar
Stetson, K. F. 1972 Boundary-layer separation on slender cones at angle of attack. A.I.A.A. J. 10, 642–648.Google Scholar
Thwaites, B. (ed.) 1960 Incompressible Aerodynamics. Oxford University Press.
Wang, K. C. 1970 Three-dimensional boundary layer near the plane of symmetry of a spheroid at incidence. J. Fluid Mech. 43, 187–209.Google Scholar
Wang, K. C. 1972 Separation patterns of boundary layer over an inclined body of revolution. A.I.A.A. J. 10, 1044–1050.Google Scholar
Wang, K. C. 1974a Laminar boundary layers near the symmetry-plane of a prolate spheroid. A.I.A.A. J. 12, 949–958.Google Scholar
Wang, K. C. 1974b Boundary layer over a blunt body at high incidence with an open-type of separation. Proc. Roy. Soc. A 340, 33–55.Google Scholar
Wang, K. C. 1974c Boundary layer over a blunt body at extremely high incidences. Phys. Fluids 17, 1381–1385.Google Scholar
Wang, K. C. 1975 Boundary layer over a blunt body at low incidence with circumferential reversed flow. J. Fluid Mech. 72, 49–65.Google Scholar
Wang, K. C. 1976 Separation of three-dimensional flow. Rev. Viscous Flow, Proc. Lockheed-Georgia Co. Symp. pp. 341–414.
Wilson, G. R. 1971 Experimental study of a laminar boundary layer on a body of revolution. M.Sc. thesis, Air Force Inst. of Tech., Wright-Patterson AFB, no. GAM/AE/71-4.
Zakkay, V., Miyazawa, M. & Wang, C. R. 1974 Lee surface flow phenomena over space shuttle at large angles of attack at M = 6. N.A.S.A. Contractor rep. no. 132501. (See also A.I.A.A. Paper no. 71–548, 1975.)Google Scholar