基于四自由度的三体船操纵运动数值模拟研究  

Numerical Simulation of Trimaran Maneuvering Motion Based on 4-DOF

作　　者：张业成 詹成胜[1,2] 尚浩东 ZHANG Yecheng;ZHAN Chengsheng;SHANG Haodong(Key Laboratory of High Performance Ship Technology of the Ministry of Education,Wuhan University of Technology,Wuhan 430063,China;School of Naval Architecture,Ocean and Energy Powering Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学高性能船舶技术教育部重点实验室,武汉430063 [2]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2023年第4期659-664,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金(5517201050+11,51979211);湖北省重点研发计划(2021BID008);绿色智能内河船舶创新专项;工业和信息化部高技术船舶科研项目(工信部装函2019[357]号文)。

摘　　要：文中针对某高速三体船的操纵运动预报,开展约束模型试验和横摇衰减试验.基于MMG模型,获取四自由度操纵水动力导数,进行三体船回转运动及Z形操纵运动预报.在数值计算过程中,进行了网格尺度及时间步长的收敛性分析,探讨了纵摇和垂荡运动对数值模拟结果的影响;数值模拟了斜拖、旋臂、横倾及横摇衰减试验.基于最小二乘法拟合计算结果并得到水动力导数,结合四自由度MMG模型进行了不同舵角下三体船的操纵性能预报,得到了三体船的操纵性能参数.Aiming at the maneuvering motion prediction of a high-speed trimaran,the constrained model test and numerical simulation of rolling attenuation test were carried out.Based on MMG model,the hydrodynamic derivatives of four-degree-of-freedom maneuvering were obtained to predict the rotary motion and Z-shaped maneuvering motion of trimaran.In the process of numerical calculation,the convergence of grid scale and time step was analyzed,and the influence of pitch and heave motion on numerical simulation results was discussed.The oblique drag,swing arm,roll and roll attenuation tests were numerically simulated.Based on the least square method,the hydrodynamic derivative was obtained,and the maneuverability of trimaran under different rudder angles was predicted by combining the MMG model with 4 degrees of freedom,and the maneuverability parameters of trimaran were obtained.

关 键 词：三体船 CFD MMG模型 船舶操纵运动 

分 类 号：U668[交通运输工程—船舶及航道工程]