CaltechAUTHORS
  A Caltech Library Service

Cavitation Inception in Spool Valves

Martin, C. Samuel and Medlarz, H. and Wiggert, D. C. and Brennen, C. (1981) Cavitation Inception in Spool Valves. Journal of Fluids Engineering, 103 (4). pp. 564-576. ISSN 0098-2202. http://resolver.caltech.edu/CaltechAUTHORS:MARjfe81

[img] PDF
See Usage Policy.

2032Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:MARjfe81

Abstract

Cavitation has been investigated in directional control valves in order to identify damage mechanisms characteristic of components of aircraft hydraulic systems. Tests have been conducted in a representative metal spool valve and in a model three times larger. Data taken under noncavitating conditions with both valves showed that the position of the high-velocity annular jet shifts orientation, depending upon valve opening and Reynolds number. By means of high-frequency response pressure transducers strategically placed in the valve chamber cavitation could be sensed by the correlation of noise with a cavitation index. The onset of cavitation can be detected by comparing energy spectra for a fixed valve opening and a constant discharge. Another sensitive indicator of cavitation inception is the ratio of cavitating to noncavitating spectral densities. The incipient cavitation number as defined in this investigation is correlated with the Reynolds number for both valves.


Item Type:Article
Additional Information:Contributed by the Fluids Engineering Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS and presented at the International Symposium on Cavitation Inception, ASME Winter Annual Meeting, New York, N.Y., December 2-7. 1979. Manuscript received by the Fluids Engineering Division March 18, 1980. This investigation was supported in full by the Air Force Aero Propulsion Laboratory through AFOSR Contract F33615-77-C-2036, which was administered by Project Engineer Paul D. Lindquist. The authors would also like to acknowledge the direct contribution of J. I. Craig, F. D. Lewis, and H. J. Bates.
Record Number:CaltechAUTHORS:MARjfe81
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:MARjfe81
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:128
Collection:CaltechAUTHORS
Deposited By: Christopher Brennen
Deposited On:13 Oct 2004
Last Modified:26 Dec 2012 08:39

Repository Staff Only: item control page