고속 활주선의 선형에 따른 저항 성능 및 규칙파 중 운동 성능 고찰
Effects of Hull Form Variations on Resistance and Seakeeping Performance of Planing Hulls with and without Incoming Regular Waves
2
조회
0
다운로드
9
인용
0
참고문헌
키워드
초록
Planing hull forms have significant influences on those hydrodynamic performances in calm water and in waves. Therefore, thehydrodynamic performance of a planing vessel should be predicted by model tests or theoretical calculations, and be confirmedwhether it shows the performance requirements at the design stage. In this study, four planing hull forms are designed with the goal ofthe improvement of resistance and seakeeping performance, and 1/6.5 scale model tests are carried out in Seoul National Universitytowing tank. The effects of design parameters such as length-to-beam ratio, deadrise angle and forebody shape on the hydrodynamicperformance are investigated, based on model test results. Running attitude and resistance of model ships in calm water are alsoestimated by empirical formulae proposed by Savitsky (1964; 2007; 2012), and compared with the model test results. It is shown thatcalm water performance of non-prismatic planing hulls can be predicted well by Savitsky (2012)'s formula which improves the originalSavitsky(1964/2007)'s formula by taking into account the variations of deadrise angles, and the actual angles between the hull bottomand the free surface.
Abstract
Planing hull forms have significant influences on those hydrodynamic performances in calm water and in waves. Therefore, thehydrodynamic performance of a planing vessel should be predicted by model tests or theoretical calculations, and be confirmedwhether it shows the performance requirements at the design stage. In this study, four planing hull forms are designed with the goal ofthe improvement of resistance and seakeeping performance, and 1/6.5 scale model tests are carried out in Seoul National Universitytowing tank. The effects of design parameters such as length-to-beam ratio, deadrise angle and forebody shape on the hydrodynamicperformance are investigated, based on model test results. Running attitude and resistance of model ships in calm water are alsoestimated by empirical formulae proposed by Savitsky (1964; 2007; 2012), and compared with the model test results. It is shown thatcalm water performance of non-prismatic planing hulls can be predicted well by Savitsky (2012)'s formula which improves the originalSavitsky(1964/2007)'s formula by taking into account the variations of deadrise angles, and the actual angles between the hull bottomand the free surface.
참고문헌 (17)
- Hwang, J.H, "On a Computer Program to Calculate the Responses of a Ship in Lateral Regular Waves", Bulletin of the Society of Naval Architects of Korea, 17(4), pp.39~45 (1980)
- Ikeda, Y, "Characteristics of hydrodynamic derivatives in maneuvering equations for super high-speed planing hulls", Proceedings of the 10th International Offshore and Polar Engineering Conference, pp.434~444 (2000)
- Katayama, T., "Characteristics of motion for planing craft in head wave at very high-speed", Journal of Kansai Society of Naval Architects, 233, pp.55~62 (2000)
- Katayama, T., "An experimental study on instability of a super high-speed planing craft with outboard engine at straight running", Proceedings of 11th International Conference on Fast Sea Transportation, pp.850~856 (2011)
- 김동진, "활주선의 하중 및 무게 중심 위치 변화가 항주 자세에 미치는 영향에 대한 연구", 대한조선학회 논문집, 46(3), pp.335~342 (2009), 대한조선학회
- 김동진, "Design of high-speed planing hulls for the improvement of resistance and seakeeping performance", International Journal of Naval Architecture and Ocean Engineering, 5(1), pp.161~177 (2013), 대한조선학회
- 이귀주, "25노트급 활주형 어선의 기본선형 개발에 관한 연구", 한국해양공학회지, 17(5), pp.88~94 (2003), 한국해양공학회
- Lewandowski, E. M., "The Dynamics of Marine Craft : Maneuvering and Seakeeping" (2004), World Scientific Publishing Company
- Theoretical Prediction of Motions of High-Speed Planing Boats in Waves, "Martin, M.", ~, pp.DTNSRDC Report 76-0069 (1976)
- Morabito, M., "On the Spray and Bottom Pressures of Planing Surfaces", 박사, pp.2010
- 오광호, "수치계산에 의한 활주선의 항주 자세 및 저항 추정", 대한조선학회 논문집, 50(2), pp.95~103 (2013), 대한조선학회
- Savitsky, D., "Hydrodynamic Design of Planing Hull", Marine Technology, 1(1), pp.71~96 (1964)
- Savitsky, D., "Procedures for Hydrodynamic Evalulation of Planing Hulls in Smooth and Rough Water", Marine Technology, 13(4), pp.381~400 (1976)
- Savitsky, D, "Inclusion of Whisker Spray Drag in Performance Prediction Method for High-Speed Planing Hulls", Marine Technology, 44(1), pp.35~56 (2007)
- Savitsky, D., "The Effect of Bottom Warp on the Performance of Planing Hulls", Proceedings of 3rd Chesapeake Powerboat Symposium, pp.1~40 (2012)
- 신정일, "고속 예인시스템을 이용한 단을 가진 활주형선의 저항특성 고찰", 대한조선학회 논문집, 42(4), pp.341~349 (2005), 대한조선학회
- A Nonlinear Mathematical Model of Motions of a Planing Boat in Regular Waves, "Zarnick, E.", ~, pp.DTNSRDC Report 78-032 (1978)