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Research of Elements Giving Effects on the Numerical Analysis for the LNG Carrier

LNG 운반선에 대한 수치해 변화에 영향을 주는 요소에 관한 연구

  • Kim, Hee-Taek (Dept. of Naval Architecture & Ocean Eng. Chungnam National Univ.) ;
  • Kim, Hyoung-Tae (Dept. of Naval Architecture & Ocean Eng. Chungnam National Univ.)
  • 김희택 (충남대학교 선박해양공학과) ;
  • 김형태 (충남대학교 선박해양공학과)
  • Published : 2006.12.20

Abstract

Numerical analysis using the FLUENT is performed for the 138K LNG carrier of the MOERI. In this study, results according to the number and also the type of the grid, different turbulent models, variations of y+ are compared with experiments and computational results from the WAVIS. RSM model gives good result in comparison with other models, and the more the number of grid increase, the better the resistance converges to the constant value. Additionally, it is confirmed that the resistance and wake distributions vary with the change of y+, and O-O type grid yields better wake distributions than that of O-H type. Average velocity distributions and velocity profiles are mainly in accord with experiments and computational results of the WAVIS, however, present results in the region of transom and tip of leading edge of the rudder are poor for the lower velocity components comparing with that of the WAVIS.

Keywords

References

  1. 김병준, 최순호, 김형태, 반석호, 2005, '프로펠러에 의한 LNG 운반선 이중모형 선미의 속도변화 계측,' 대한조선학회 논문집, 제 42권, 제 5호, pp. 448-457 https://doi.org/10.3744/SNAK.2005.42.5.448
  2. 김진, 박일룡, 김광수, 반석호, 2005, 'LNG 운반선의 자유수면을 포함한 자항상태 난류유동장의 수치해석,' 대한조선학회 논문집, 제 42권, 제 6호, pp. 583-592 https://doi.org/10.3744/SNAK.2005.42.6.583
  3. 반석호, 윤현세, 이영연, 박일룡, 이춘주, 강우전, 2003, 'KRISO 138K LNG 운반선 모형 주위의 국부 유동장 계측,' 대한조선학회 논문집, 제 40권, 제 2호, pp. 1-10
  4. Sung-Eun Kim, 2001, 'Unstructured Mesh Based Reynolds Stress Transport Modeling of complex Turbulent Shear Flows,' 39th Aerospace Sciences Meeting and Exhibit, AIAA-2001-728

Cited by

  1. The Design Optimization of a Flow Control Fin Using CFD vol.49, pp.2, 2012, https://doi.org/10.3744/SNAK.2012.49.2.174
  2. Numerical Simulation of Turbulent Flow around KLNG Hull Form with Different Scale Ratio vol.51, pp.1, 2014, https://doi.org/10.3744/SNAK.2014.51.1.8