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The pressure-hole problem

Published online by Cambridge University Press:  20 April 2006

C. Ducruet  and
A. Dyment
C. Ducruet
Affiliation:
I.M.F.L., 5 bd Painlevé, 59000 Lille, France Permanent address: E.N.S.I.,-59326 Valenciennes Cedex, France.
A. Dyment
Affiliation:
I.M.F.L., 5 bd Painlevé, 59000 Lille, France Permanent address: Université de Lille I, 59655 Villeneuve d'Ascq Cedex, France.
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Abstract

The static pressure-hole problem is investigated both theoretically and experimentally. The influence of all significant dimensionless parameters is brought to light. These parameters represent the effects of the boundary layer, of the velocity gradient and of the wall curvature. A partial linearization makes it possible to propose a formula of correction containing three influence functions which cannot be determined by the theory. A limited number of experiments on appropriate models leads to the determination of these functions in case of practical requirements. So, a method of correction is obtained, but only in incompressible flow. The previous formula has been verified in two complex flows. The importance of the correction on the pressure drag of a slender body is brought to light and the difficulties in the application on the method are emphasized.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 142 , May 1984 , pp. 251 - 267
Copyright
© 1984 Cambridge University Press

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