Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Cavitation Test at High Reynolds Number Using a Partial Propeller Blade Model

부분 프로펠러 날개 모형을 이용한 높은 레이놀즈 수에서의 공동시험

  • Choi, Gil-Hwan (Hyundai Maritime Research Institute, Hyundai Heavy Industries Co., Ltd.) ;
  • Chang, Bong-Jun (Hyundai Maritime Research Institute, Hyundai Heavy Industries Co., Ltd.) ;
  • Cho, Dae-Seung (Dept. of Naval Architecture and Ocean Engineering, Pusan National University)
  • 최길환 (현대중공업 선박해양연구소) ;
  • 장봉준 (현대중공업 선박해양연구소) ;
  • 조대승 (부산대학교 조선해양공학과)
  • Published : 2009.12.20
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Abstract

As the scale factor of model propellers utilized in cavitation test is about 40, it is difficult to find out practical countermeasures against the small area erosions on the blade tip region throughout model erosion tests. In this study, a partial propeller blade model was used for the observation of cavitation pattern for the eroded propeller. A partial propeller blade model was manufactured from 0.7R to tip with expanded profile and with adjustable device of angle of attack. Reynold's number of a partial propeller blade model is 7 times larger than that of a model propeller. Also, anti-singing edge and application of countermeasures to partial propeller blade model which produced in large scale can be more practical than a model propeller. For the observation of cavitation at high Reynold's number, high speed cavitation tunnel was used. To find out the most severe erosive blade position during a revolution, cavitation observation tests were carried out at 5 blade angle positions.

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References

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