수치계산에 의한 활주선의 항주 자세 및 저항 추정
Numerical Prediction of Running Attitude and Resistance of Planing Craft
2
조회
0
다운로드
10
인용
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참고문헌
키워드
초록
Prediction of the running posture is important to evaluate the resistance by the numerical calculation for a high speed vessel. Especially for a planing craft having a large variation of running attitude it becomes more essential, but it can not be obtained easily because the running posture and the hydrodynamic forces including the resistance are interacted with each other. So iterative calculation to obtain the dynamic forces according to the changes in attitude is necessary, in this study, considering the calculated hydrodynamic force at the assumed draft as the additional buoyancy the corrected draft is calculated through satisfying the equilibrium between the buoyancy and the hull weight. To verify the derived method three kinds of hull forms were used with the results of model tests, R/V ATHENA and 150 tons class guide vessel for middle-speed semi-planing crafts, 28 feet fast boat for a high-speed planing boat. For all cases with several iterations the converged value of draft can be obtained, lastly the resistance and flow around hull were simulated by using VOF method.
Abstract
Prediction of the running posture is important to evaluate the resistance by the numerical calculation for a high speed vessel. Especially for a planing craft having a large variation of running attitude it becomes more essential, but it can not be obtained easily because the running posture and the hydrodynamic forces including the resistance are interacted with each other. So iterative calculation to obtain the dynamic forces according to the changes in attitude is necessary, in this study, considering the calculated hydrodynamic force at the assumed draft as the additional buoyancy the corrected draft is calculated through satisfying the equilibrium between the buoyancy and the hull weight. To verify the derived method three kinds of hull forms were used with the results of model tests, R/V ATHENA and 150 tons class guide vessel for middle-speed semi-planing crafts, 28 feet fast boat for a high-speed planing boat. For all cases with several iterations the converged value of draft can be obtained, lastly the resistance and flow around hull were simulated by using VOF method.
참고문헌 (10)
- Dawson, C.W., "A practical computer method for solving ship-wave problems", Proceedings of the 2nd International Conference on Numerical Ship Hydrodynamics, pp.30~38 (1977), University of California Berkeley
- Resistance Characteristics of the High Speed Transom Stern Ship R, "V ATHENA in the Bare Hull Condition", Douglas, S.J., 1984, DTNSRDC Report 84[DOI]
- 김병남, "고속 활주선 모형 주위의 유동해석", 한국해양공학회지, 23(4), pp.38~46 (2009), 한국해양공학회
- Kim, D.H., "Analysis of the Nonlinear Wave-Making Problem of Practical Hull Forms Using Panel Method", Journal of the Society of Naval Architects of Korea, 37(4), pp.1~10 (2000)
- 김동진, "활주선의 하중 및 무게 중심 위치 변화가 항주 자세에 미치는 영향에 대한 연구", 대한조선학회 논문집, 46(3), pp.335~342 (2009), 대한조선학회
- Kim, W.J., "Development of Wave and Viscous Flow Analysis System for Computational Evaluation of Hull Forms", Journal of Ship and Ocean Technology, 4(3), pp.33~45 (2000)
- Development of 20feet, "60feet Powerboat with CAE Total Design and New Production System", Lee, H.S., 2011, Annual Report No. 10037981
- Shin, J.I., "A study on resistance characteristics of a leisure boat using unmanned high-speed towing carriage", Proceedings of the Annual Autumn Meeting The Society of Naval Architects of Korea, pp.517~525 (2004)
- Savitsky, D., "Hydrodynamic Design of Planing Hull", Marine Technology, 1(1), pp.71~95 (1964)
- Model Test Report for a 150-ton Class Fishery Guidance Vessel, "Yoo, J.", MOERI, ~, pp.Report BSPIS504A-94-2 (2008)