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Gaskinetics and gasdynamics of orifice flow

Published online by Cambridge University Press:  28 March 2006

Hans W. Liepmann
Hans W. Liepmann
Affiliation:
California Institute of Technology, Pasadena, California
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Abstract

The paper gives the result of a study on the efflux of gases through circular apertures. The problem is considered as an example of a transition from the gasdynamic to the gaskinetic régime.

The mass flow of helium, argon and nitrogen was measured for a range of upstream pressures corresponding to (mean free path)/(aperture diameter) from about 50 to 5 × 10−3; within this range the transition from molecular effusion to inviscid, transonic flow takes place. The theory for the two asymptotic limits is discussed and first-order corrections to the free molecular and inviscid limit formulae are given.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 10 , Issue 1 , February 1961 , pp. 65 - 79
Copyright
© 1961 Cambridge University Press

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References

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