고속 활주선 모형 주위의 유동해석
Flow Analysis around a High-speed Planing Hull Model
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다운로드
4
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참고문헌
키워드
초록
Two sets of numerical simulations were carried out for a planing hull model ship. In the first, the WAVIS 1.4 linear and nonlinear potential solver was utilized with the free support condition, in which the running posture was determined during calculation. The linear and nonlinear potential calculation results showed qualitative agreement in the trim and resistance coefficient with the MOERI towing tank test. However, the nonlinear potential calculation gave better results than the linear method. In the next simulation, Fluent 6.3.26 with a VOF model and the WAVIS 1.4 nonlinear potential solver were used with the given running posture from the measurement carried out in the MOERI towing tank. Fluent with the VOF method had substantially better agreement with model test results than the results from the WAVIS nonlinear potential calculation for the total resistance coefficient, and for the bow and stern wave patterns, in spite of the much greater computational costs. Both methods can be utilized in planing hull design when their limitations are perceived, and the running posture should be predicted correctly.
Abstract
Two sets of numerical simulations were carried out for a planing hull model ship. In the first, the WAVIS 1.4 linear and nonlinear potential solver was utilized with the free support condition, in which the running posture was determined during calculation. The linear and nonlinear potential calculation results showed qualitative agreement in the trim and resistance coefficient with the MOERI towing tank test. However, the nonlinear potential calculation gave better results than the linear method. In the next simulation, Fluent 6.3.26 with a VOF model and the WAVIS 1.4 nonlinear potential solver were used with the given running posture from the measurement carried out in the MOERI towing tank. Fluent with the VOF method had substantially better agreement with model test results than the results from the WAVIS nonlinear potential calculation for the total resistance coefficient, and for the bow and stern wave patterns, in spite of the much greater computational costs. Both methods can be utilized in planing hull design when their limitations are perceived, and the running posture should be predicted correctly.
참고문헌 (4)
- 김도현, "패널법을 이용한 일반 상선의 비선형 조파문제 해석", 대한조선학회논문집, 37(4), pp.1~10 (2000)
- 김도현, "WAVIS 포텐셜 유동 해석 프로그램의 트랜섬 모델링에 대한 검증", 선박해양기술, 30, pp.105~110 (2001)
- 유진원, "저항최소화 소형 어선선형의 선수파 특성에 관한 연구", 대한조선학회 논문집, 45(2), pp.124~131 (2008), 대한조선학회
- 이영길, "초고속선의 선형개발과 CFD", 대한조선학회지, 32(5), pp.33~35 (1995)