When a marine propeller with the wing shape rotates at high speed underwater, local pressure on the blade decreases and various types of cavitation inevitably occur in where the local pressure falls below the vapor pressure. Cavity reduces the efficiency, erodes the propeller surface, and generate vibration and serious noise. Especially, underwater noise caused by cavitation is directly connected to the comfort of commercial ships and also the survivability of naval vessels. In order to reduce the occurrence of the cavitation and to design low noise propeller, it is demanded to figure out the correlation of noise characteristics with growth patterns of the cavity. In this paper, we observed global behavior of partial cavities generated on two-dimensional hydrofoils and made a map of cavity patterns. We also measured pressure fluctuations and investigated noise characteristics directly connected with the process of occurrence of the cavity.
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ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2016
Busan, South Korea
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4998-9
PROCEEDINGS PAPER
Experimental Investigation of Cavity Patterns and Noise Characteristics
Byoung-Kwon Ahn,
Byoung-Kwon Ahn
Chungnam National University, Daejon, Korea
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So-won Jeong,
So-won Jeong
Chungnam National University, Daejon, Korea
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Ji-Hye Kim
Ji-Hye Kim
Chungnam National University, Daejon, Korea
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Byoung-Kwon Ahn
Chungnam National University, Daejon, Korea
So-won Jeong
Chungnam National University, Daejon, Korea
Ji-Hye Kim
Chungnam National University, Daejon, Korea
Paper No:
OMAE2016-55073, V007T06A100; 8 pages
Published Online:
October 18, 2016
Citation
Ahn, B, Jeong, S, & Kim, J. "Experimental Investigation of Cavity Patterns and Noise Characteristics." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 7: Ocean Engineering. Busan, South Korea. June 19–24, 2016. V007T06A100. ASME. https://doi.org/10.1115/OMAE2016-55073
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