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 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 coefficients. The types of cavitation which occured as a result of the blockage were documented. The areas of erosion were estimated and the erosion patterns were photographed for each test condition.
Cavitation erosion on a model ice class propeller in blocked flow
Die Kavitationserosion eines eisgangtauglichen Modellpropellers dessen Schraubenströmung durch Eisstücke gestört ist
1995
10 Seiten, 7 Bilder, 3 Tabellen, 6 Quellen
Aufsatz (Konferenz)
Englisch
Cavitation Erosion on a Model Ice Class Propeller in Blocked Flow
British Library Conference Proceedings | 1995
|Cavitation and propeller erosion
Engineering Index Backfile | 1925
|Studies of propeller cavitation erosion
Tema Archiv | 1974
|Cavitation erosion of a ship model propeller1
IOS Press | 1971
|Further studies of propeller cavitation erosion
Tema Archiv | 1983
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