CAVITATION EROSION ON A MODEL ICE CLASS PROPELLER IN BLOCKED FLOW

Ships which operate in Arctic and sub-Arctic conditions are often subjected to momentary increased propeller cavitation because ice pieces block the flow into the propeller. Model tests have shown that such ice blockages lead to regions of violent cloud cavitation. There is a possibility that severe erosion occurs on full scale propellers while operating in these conditions. Erosion tests, using paint scale propellers while operating in these conditions. Erosion tests, using paint films, were carried out in a cavitation tunnel with a 200 mm diameter model propeller of the type which is fitted to the Canadian R-Class icebreakers. A simulated ice blockage was installed in the tunnel ahead of the propeller and tests were conducted over a range of cavitation numbers and advance coefficients. The types of cavitation which occurred as a result of the blockage were documented. The areas of erosion were estimated and the erosion patterns were photographed for each test condition.

  • Supplemental Notes:
    • PROPCAV '95, Intl Conf on Propeller Cavitation Research; 16- 18 May; Newcastle upon Tyne, UK. Sponsored by Univ of Newcastle upon Tyne, UK, et al. Pprs. Publ by Penshaw Press, Sunderland, UK, ISBN 0-9518806-4; p 229 [10 p, 6 ref, 3 tab, 7 fig]
  • Authors:
    • Doucet, J M
    • Bose, N
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00717272
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 4 1996 12:00AM