Some observations of tip-vortex cavitation

Arndt, R. E. A. ; Arakeri, V. H. ; Higuchi, H. (1991) Some observations of tip-vortex cavitation Journal of Fluid Mechanics, 229 . pp. 269-289. ISSN 0022-1120

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Cavitation has been observed in the trailing vortex system of an elliptic planform hydrofoil. A complex dependence on Reynolds number and gas content is noted at inception. Some of the observations can be related to tension effects associated with the lack of sufficiently large-sized nuclei. Inception measurements are compared with estimates of pressure in the vortex obtained from LDV measurements of velocity within the vortex. It is concluded that a complete correlation is not possible without knowledge of the fluctuating levels of pressure in tip-vortex flows. When cavitation is fully developed, the observed tip-vortex trajectory shows a surprising lack of dependence on any of the physical parameters varied, such as angle of attack, Reynolds number, cavitation number, and dissolved gas content.

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Deposited On:23 Sep 2010 10:11
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