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Viscous fluid buckling of plane and axisymmetric jets

Published online by Cambridge University Press:  20 April 2006

J. O. Cruickshank  and
B. R. Munson
J. O. Cruickshank
Affiliation:
Department of Engineering Science and Mechanics, and Engineering Research Institute, Iowa State University, Ames, Iowa 50011
B. R. Munson
Affiliation:
Department of Engineering Science and Mechanics, and Engineering Research Institute, Iowa State University, Ames, Iowa 50011
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Abstract

Experimental results are presented concerning the spontaneous oscillations observed when a high-viscosity fluid jet flows vertically against a flat surface. The two jet shapes investigated were the axisymmetric jet and the plane jet. The minimum distance from the jet orifice to the flat surface for which these oscillations are observed, termed the ‘buckling height’, was determined experimentally. The frequency of the subsequent oscillations was also determined. Both were measured as functions of fluid and flow variables. It is found that surface tension effects are the dominant factors influencing the buckling height, while the rate of oscillation is affected by both surface tension effects and by viscous, gravity and inertia effects. The major results are presented in non-dimensional form. Photographs of the buckling phenomenon are provided for representative jet geometries. It is also established experimentally that there is an upper limit to the flow Reynolds number above which buckling does not occur.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 113 , December 1981 , pp. 221 - 239
Copyright
© 1981 Cambridge University Press

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References

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