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A study of transonic flow around spheres

Published online by Cambridge University Press:  11 April 2006

K. R. Jaikrishnan ,
A. Z. Szeri  and
W. M. Rohrer
K. R. Jaikrishnan
Affiliation:
Westinghouse Research Laboratories, Pittsburgh, Pennsylvania 15235
A. Z. Szeri
Affiliation:
Department of Mechanical Engineering, University of Pittsburgh, Pennsylvania 15261
W. M. Rohrer
Affiliation:
Department of Mechanical Engineering, University of Pittsburgh, Pennsylvania 15261
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Abstract

The paper presents a new analytical and experimental study of transonic flow around spheres. The results of the analytical study, which employs the method of orthogonal collocation for simultaneous solution of the momentum equations, the equation of continuity and the energy equation, are compared with hitherto unpublished measurements obtained on spheres of various sizes (1·02, 2·54 and 3·81 cm in diameter) in air, in dry steam and in wet steam with free-stream Mach numbers in the transonic range (0·58 < M∞ < 0·97). The relationship θ h = 91·78 + 8·59 M∞ between the attached-shock angle and the free-stream Mach number was obtained by fitting the theoretical pressure distributions to the experimental ones.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 80 , Issue 1 , 4 April 1977 , pp. 17 - 31
Copyright
© 1977 Cambridge University Press

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