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Oscillatory flows at intermediate Strouhal number in asymmetric channels

Published online by Cambridge University Press:  20 April 2006

Ian J. Sobey
Ian J. Sobey
Affiliation:
School of Mathematics, University of Bristol, U.K.
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Abstract

We consider separated oscillatory flows in asymmetric channels when the Strouhal number is sufficiently great for the flow not to be quasi-steady, but where the flow is not dominated by viscous effects. In this range, we show that numerical calculations predict the expansion of vortices during a deceleration and we investigate these flows in several different geometries. These calculations are supported by experimental observations of the motion of small particles immersed in water.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 125 , December 1982 , pp. 359 - 373
Copyright
© 1982 Cambridge University Press

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References

Smith, F. T. 1976 Q. J. Mech. Appl. Math. 29, 365–376.
Sobey, I. J. 1980 J. Fluid Mech. 96, 1–26.
Sobey, I. J. 1982 Submitted to J. Fluid Mech.Google Scholar
Stephanoff, K., Sobey, I. J. & Bellhouse, B. J. 1980 J. Fluid Mech. 96, 27–32.