Journal of Advanced Marine Engineering and Technology

  • 제41권1호
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  • Pages.36-43
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  • 2017
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
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자유수면과 프로펠러의 상호작용에 관한 수치적 연구

Numerical study on the interaction between a free surface and a propeller

  • Park, Il-Ryong (Department of Naval Architecture and Ocean Engineering, Dong-Eui University) ;
  • Park, Dong-Woo (Department of Naval Architecture and Ocean Engineering, Tongmyung University) ;
  • Lee, Sang Bong (Department of Naval Architecture and Offshore Engineering, Dong-A University) ;
  • Paik, Kwang-Jun (Department of Naval Architecture and Ocean Engineering, Inha University)
  • 투고 : 2016.10.04
  • 심사 : 2017.01.06
  • 발행 : 2017.01.31
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초록

프로펠러가 자유수면 근처에서 작동할 때, 프로펠러의 추력과 토오크는 감소하게 되고 자유수면에는 파도가 발생하게 된다. 본 연구에서는 다양한 프로펠러의 작동 조건에서 자유수면과 프로펠러의 상호작용에 대한 수치해석 결과를 살펴보았다. 회류수조에서 수행된 모형시험 결과와 비교를 통해 수치해석 기법을 검증한 후, 프로펠러의 침수깊이에 따른 프로펠러의 성능 및 자유수면의 영향에 대해 조사하였다. 그리고 프로펠러의 전진비에 따른 자유수면의 파형, 프로펠러 주위 유동, 추력 및 토오크의 변화 등을 확인하였다. 낮은 전진비에서 공기유입 현상은 관찰되지 않았지만, 자유수면의 파형은 프로펠러 팁 보오텍스와 밀접한 관계가 있음을 확인하였다. 또한 공기유입 현상이 발생하지 않는 조건에서는 높은 전진비에서 프로펠러 추력 및 토오크의 감소량이 증가함을 확인하였다.

The results of a numerical study on the performance of a propeller operating near a free surface are presented in this paper. The simulations are verified through comparison with experimental data, which was performed in a circulating water channel. The propeller performance as a function of the submerged depth was investigated. The effect of the propeller advance ratio on the wave patterns, flow structures around propeller, and thrust and torque of the propeller was also studied. Air ventilation was not observed for low advance coefficients. However, the simulations showed that wave pattern was strongly related to the tip vortex strength and inflow velocity. When air ventilation does not occur, the deduction of propeller thrust and torque increase for high advance coefficients.

키워드

참고문헌

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