摘要
针对现有游艇模拟器中无法模拟游艇静水"海豚运动"的问题,基于游艇高速航行受力本质进行分析,结合平板滑行理论和Savitsky关于棱柱形滑行艇的相关研究,对游艇几何模型进行合理简化,求解游艇静水中滑行运动姿态.基于高频自由面假设和切片理论计算游艇垂荡、纵摇水动力系数,采用Routh-Hurwitz线性稳定性判据寻找游艇发生"海豚运动"阈值.提出引入人工干预的方法激励处于不稳定运动状态的游艇,使其发生"海豚运动"并进行数值仿真试验.试验结果表明当且仅当游艇处于不稳定运动状态时人工干预可以诱导游艇进行"海豚运动",数值仿真结果与模型试验结果符合良好.将算法与游艇模拟器相结合进行工程应用试验,游艇模拟器运行稳定、效果良好,实现了游艇模拟器中游艇"海豚运动"的仿真.
Porpoising motion is still a unsolved problem in yacht simulator.By combining the flat sliding theory and related work on prismatic planing craft of Savitsky,force of yacht was analysed.Yacht geometric model was reasonably simplified,and the yacht’s motion posture was solved.Hydrodynamic coefficients were calculated by high frequency free surface assumption and strip theory.Porpoising motion threshold of yacht was found by Routh-Hurwitz stability criterion.The method of artificial intervention was proposed to promote the yacht into porpoising condition,and numerical experiments were made.The numerical results agree well with the model test results.The algorithm was embedded in the yacht simulator for engineering application.The yacht simulator runs stably with good results.The porpoising motion simulation in yacht simulator is implemented.
作者
李笑晨
尹勇
LI Xiaochen;YIN Yong(Key Laboratory of Marine Simulation and Control for Ministry of Transportation,Dalian 116026,Liaoning China)
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2020年第12期89-95,共7页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
工信部“智能船舶综合测试与验证研究”项目(工信部装函〔2018〕473号)
中央高校基本科研业务费专项资金资助项目(3132019312)。
关键词
游艇模拟器
运动数学模型
海豚运动
稳定性分析
人工干预
yacht simulator
mathematical model of movement
porpoising motion
stability analysis
artificial intervention
