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An Unstructured RANS Study of Tip-Leakage Vortex Cavitation Inception

[+] Author Affiliations
W. H. Brewer, D. L. Marcum

Mississippi State University, Starkville, MS

S. D. Jessup, C. Chesnakas

Naval Surface Warfare Center, West Bethesda, MD

D. G. Hyams, K. Sreenivas

University of Tennessee, Chattanooga, TN

Paper No. FEDSM2003-45311, pp. 193-200; 8 pages
doi:10.1115/FEDSM2003-45311
From:
  • ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
  • Volume 1: Fora, Parts A, B, C, and D
  • Honolulu, Hawaii, USA, July 6–10, 2003
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3696-7 | eISBN: 0-7918-3673-8
  • Copyright © 2003 by ASME

abstract

To study the physics of cavitation inception, a ducted propulsor simulation is developed and extensively validated with experimental results. The numerical method is shown to be in good agreement with experimental measurements made in the vortex. The simulation is used as a tool for investigating the minimum pressure, circulation, and axial/tangential velocities in the vortex core. Additionally, the tool is used to study Reynolds number scaling effects of cavitation inception. The simulation reveals that the leakage vortex exhibits little dependence on Reynolds number, while the trailing edge vortex appears to exhibit classical trends. Moreover, the trailing edge, albeit the weaker vortex, appears to be causing inception.

Copyright © 2003 by ASME

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