CAVITATION NUCLEI SIZE DISTRIBUTION IN HIGH-SPEED WATER TUNNEL UNDER CAVITATION AND NON-CAVITATION CONDITIONS

Gas nuclei spectra measurements obtained with our modified Coulter Counter system in cavitating and non-cavitating conditions in our High Speed Water Tunnel are reported. These show the strong diminution with time of nuclei population during runs of several days, presumably as the gas is continually forced into solution. Total gas content during these runs is held approximately constant. The general shape of the spectra curves then remains approximately constant with time, although strongly diminishing in amplitude. It can be predicted by a quasi-theoretical expression which does not include any empirical constants. Hence its applicability to tunnel flows may be quite general. The effect of cavitation to the same tunnel velocity is to reduce nuclei content more rapidly than in its absence, even though mean tunnel pressure is less in the cavitating case.

• Corporate Authors:

  University of Michigan, Ann Arbor

  Cavitation and Multiphase Flow Laboratory
  Ann Arbor, MI  United States  48109
• Authors:
  • Ahmed, O
  • Hammitt, F G
• Publication Date: 1972-4

Media Info

• Pagination: 64 p.

Subject/Index Terms

• TRT Terms: Cavitation (Mechanics); Water tunnels; Water tunnels (Test facilities)
• Old TRIS Terms: Water tunnel testing
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00034718
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: UMICH-013570-23-T Tech Rpt
• Contract Numbers: NSF-GK-1889
• Files: TRIS
• Created Date: Sep 29 1972 12:00AM