甲板上浪及其砰击荷载是船舶设计的关键因素之一，为研究波浪荷载作用下船体甲板上浪及砰击荷载分布，以南海作业的FPSO为研究对象，采用光滑粒子动力学方法建立波浪-浮体全耦合时域分析模型。基于实测海洋环境参数，对畸形波及规则波作用下FPSO甲板上浪及船首砰击进行研究。首先对畸形波模拟结果进行验证，然后将畸形波作用下的研究结果与规则波作用下的研究结果进行对比分析。结果表明，畸形波作用下船体的纵摇幅值为规则波作用下的1.3倍，砰击荷载为规则波作用下的1.25倍，基于规则波计算的船体砰击荷载值偏小。
Green water and slamming loads are one of the key factors in ship design. To investigate the green water and the wave slamming distribution of the ship under wave loads, the wave-floating body time domain coupling model is established by using smooth particle dynamics method. Based on the measured marine environmental parameters, the green water and the wave slamming of FPSO under the freak waves and regular waves are studied. Firstly, the simulation results of freak waves are verified, and then the research results under the freak waves are compared with those under the regular waves. The research results show that the pitch amplitude of the ship under the freak wave loading is 1.3 times of that under the regular wave loading, and the slamming load is 1.25 times of that under the regular wave loading. The value of the slamming load calculated based on regular waves is too small.
2023,45(24): 116-121 收稿日期：2022-11-09
DOI：10.3404/j.issn.1672-7649.2023.24.021
分类号：U664.3
基金项目：国家自然科学基金资助项目（52088102）
作者简介：李辉(1990-),男,博士,工程师,研究方向为深水浮体水动力性能
参考文献：
[1] 高巍, 马林静, 董璐, 等. 南海某FPSO STP单点系泊系统的再评估[J]. 船舶工程, 2017, 39(7): 79-83
GAO W, MA L J, DONG L, et al. Re-evaluation of FPSO STP mooring system in south china sea[J]. Ship Engineering, 2017, 39(7): 79-83
[2] RUGGERI F, WATAI RA, et al . Fundamental green water study for head, beam and quartering seas for a simplified FPSO geometry using a mixed experimental and numerical approach[J]. Mar Syst Ocean Technol, 2015, 10(2): 71-90.
[3] ÖSTMAN A, PAKOZDI C, SILVA DFC. A fully non-linear RANS-VOF numerical wavetank applied in the analysis of green water on FPSO waves[C]//ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering, San Francisco, USA, 2014.
[4] WANG D X, DONG S, FANG K Z. Breaking wave impact on perforated caisson breakwaters: A numerical investigation[J]. Ocean Engineering, 2022, 249: 110919
[5] MA Y, DONG G, PERLIN M, et al. Higher-harmonic focused-wave forces on a vertical cylinder[J]. Ocean Engineering, 2009, 36(8): 595-604
[6] 付明春. 船桥碰撞下船体结构强度及动力响应分析[J]. 舰船科学技术, 2022, 44(19): 18-21+137
FU M C. Strength and dynamic response analysis of ship structure under bridge collision[J]. Ship Science and Technology, 2022, 44(19): 18-21+137
[7] 王美玉. 波浪作用下船舶横向振动控制系统[J]. 舰船科学技术, 2022, 44(19): 28-31
WANG M Y. Ship transverse vibration control system under wave action[J]. Ship Science and Technology, 2022, 44(19): 28-31
[8] 高巍, 石扬, 张继春. Spar基础浮式风机系泊系统全耦合分析[J]. 船舶工程, 2018, 40(1): 106-112
GAO W, SHI Y J, ZHANG J C. Unity coupling analysis of mooring system of spar type offshore floating wind turbine[J]. Ship Engineering, 2018, 40(1): 106-112
[9] ROSETTI G F, PINTO M L, DE MELLO P C, et al. CFD and experimental assessment of green water events on an FPSO hull section in beam waves[J]. Marine Structures, 2019, 65(5): 154-180
[10] 刘殿勇, 李福祯, 曲颖. 畸形波中甲板上浪船舶的运动与砰击响应研究[J]. 中国造船, 2022, 63(4): 115-123
LIU D Y, LI F ZH, QU Y. Motion and slamming response of hull to green water in freaking waves[J]. Shipbuilding of China, 2022, 63(4): 115-123
[11] 林鹏智, 刘鑫. 光滑粒子水动力学在水利与海洋工程中的应用研究进展[J]. 水利水电科技进展, 2015, 35(5): 36-46
LIN P ZH, LIU X. Recent advances of application of smoothed particle hydrodynamics in hydraulic and ocean engineering[J]. Advances in Science and Technology of Water Resources, 2015, 35(5): 36-46
[12] 倪兴也, 冯卫兵, 杨斌. 基于DualSPHysics的数值波浪水槽研究[J]. 水道港口, 2014, 35(2): 7-111
NI X Y, FENG W B, YANG B. Numerical wave tank based on DualSPHysics[J]. Journal of Waterway and Harbor, 2014, 35(2): 7-111
[13] 常爽, 黄维平, 魏东泽, 等. 二阶波浪力和聚焦位置对畸形波作用下张力腿平台动力响应的影响研究[J]. 振动与冲击, 2020, 39(17): 254-260
CHANG S, HUANG W P, WEI D Z et al. Effects of second-order wave force and focusing location on dynamic response of a tension leg platform under freak wave[J]. Journal of Vibration and Shock, 2020, 39(17): 254-260
[14] SUN P N, LUO M, DAVID LE Touzé, et al. The suction effect during freak wave slamming on a fixed platform deck: Smoothed particle hydrodynamics simulation and experimental study[J]. Physics of Fluids, 2019, 31: 117108
