Cavitation Erosion on a Model Ice Class Propeller in Blocked Flow

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ConferenceInternational Conference on Propeller Cavitation, 16-18 May 1995, University of Newcastle upon Tyne
Subjectcavitation; propeller; ice
AbstractShips 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 films, were carried out in the cavitation tunnel at the Institute for Marine Dynamics (IMD) with a 200 mm diameter model propeller of the type which is fitted to the Canadian R-Class ice-breakers. 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 coeffieients. 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.
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedNo
NRC number5650
NPARC number8895581
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Record identifier6bfd1f53-1bcb-46aa-88cc-246583004f70
Record created2009-04-22
Record modified2016-05-09
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