| Author | Search for: Shih, L. Y.; Search for: Zheng, Y. |
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| Format | Text, Article |
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| Conference | 2nd International Symposium on Propeller and Cavitation, Hangzhou, China, 1992 |
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| Subject | propeller/ice interaction; non-contact phenomena; ice blockage; proximity condition |
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| Abstract | When the propeller blades pass the ice blocks with virtually very little clearance, high blade-load impulses and subsequently high peak loads do occur. This was first observed during a full-scale trial (1984) of MV Robert LeMeur, and later verified by the model tests conducted at NRC/IMD ice tank. A two-dimensional model with time dependence is used to study dominant features of this phenomenon. The hydrodynamic flow over a blade profile is considered to be constricted by an ice block at proximity condition. The numerical results indicate a peak load about 5.78 times that computed for open water. The associated flow phenomena have been studied in detail, and a peculiar pressure hump due to throttling effect of the rear corner of ice block was discovered . The moment ditch appearing in the distribution of pitching moment is caused by this pressure hump. |
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| Publication date | 1992 |
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| Language | English |
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| Identifier | IR-1992-20 |
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| NRC number | NRC-IOT-5620 |
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| NPARC number | 8895298 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | f77fec4b-4046-44f8-ac52-6d8900f4b808 |
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| Record created | 2009-04-22 |
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| Record modified | 2023-06-26 |
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