• Title/Summary/Keyword: 반류 수축

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Numerical Study on Propeller Cavitation and Pressure Fluctuation of Model and Full Scale ship for a MR Tanker (MR Tanker 실선 및 모형선 프로펠러 캐비테이션 및 변동압력 수치해석 연구)

  • Park, Il-Ryong;Kim, Ki-Sup;Kim, Je-In;Seol, Han-shin;Park, Young-Ha;Ahn, Jong-Woo
    • Journal of the Society of Naval Architects of Korea
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    • v.57 no.1
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    • pp.35-44
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    • 2020
  • Propeller cavitation extent, pressure fluctuation induced by cavitation, pressure distribution on propeller blade, total velocity distribution and nominal wake distribution for a MR Taker were computed in both conditions of model test and sea trial using a code STAR-CCM+. Then some of the results were compared with model test data at LCT and full-scale measurement (Ahn et al (2014); Kim et al (2014)] in order to confirm the availability of a numerical prediction method and to get the physical insight of local flow around a ship and propeller. The nominal wake distributions computed and measured by LDV velocimeter on the variation of on-coming velocity show the wake contraction characteristics proposed by Hoekstra (1974). The numerical prediction of propeller cavitation extent on a blade angular position and pressure fluctuation level on each location of pressure sensors are very similar with the experimental results.