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

The Society of Naval Architects of Korea (대한조선학회)
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Reduction of Added Resistance by Internal Flow Control in the Moonpool of a Drillship

시추선 문풀의 내부 유동제어에 의한 부가저항 저감

  • Choi, Si-Young (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University) ;
  • Lee, Young-Gill (Dept. of Naval Architecture and Ocean Engineering, inha University) ;
  • Jeong, Kwang-Leol (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University) ;
  • Ha, Yoon-Jin (Dept. of Naval Architecture and Ocean Engineering, Graduate School, Inha University)
  • 최시영 (인하대학교 대학원 조선해양공학과) ;
  • 이영길 (인하대학교 기계공학부 조선해양공학) ;
  • 정광열 (인하대학교 대학원 조선해양공학과) ;
  • 하윤진 (인하대학교 대학원 조선해양공학과)
  • Received : 2011.07.01
  • Accepted : 2011.10.31
  • Published : 2011.12.20
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Abstract

The internal flows of moonpool usually causes huge added resistance on drillships, and those are very complex to analyze. Therefore, not only experimental approaches but also numerical simulations are required for better investigations when dealing with the hydrodynamic problems of moonpool. In the present research, numerical simulations are used to find out why the resistance increases by moonpool on a running drillship. That is, the three-dimensional numerical simulations and model tests are carried out to examine the characteristics of internal flow and added resistance by changing the section of the moonpool in both longitudinal and transverse directions. Finally, based on the present studies, an optimized shape of the moonpool is suggested, which effectively reduces added resistance, and that is confirmed with three-dimensional numerical simulations and model tests.

Keywords

References

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Cited by

  1. Study on Moonpool Resonance Effect on Motion of Modern Compact Drillship vol.27, pp.3, 2013, https://doi.org/10.5574/KSOE.2013.27.3.053
  2. Experimental study on piston- and sloshing- mode moonpool resonances vol.21, pp.4, 2016, https://doi.org/10.1007/s00773-016-0386-x
  3. Effects of Scale Ratio on Flow Characteristics in Moonpool vol.22, pp.1, 2016, https://doi.org/10.7837/kosomes.2016.22.1.118