基于三维势流理论的新型养殖半潜平台水动力特性

Hydrodynamic Characteristics of New Semi-Submersible Farming Platform Based on Three-Dimensional Potential Flow Theory

基于三维势流理论对我国某沿海新型养殖半潜平台的水动力性能进行计算与对比研究,通过ANSYS软件的AQWA模块计算目标平台在频域下的附加质量、势流阻尼系数以及运动响应幅值(RAO),并分析其变化特征。通过分组对比数据,总结黏性阻尼值对RAO峰值的影响规律。结果表明,黏性阻尼对新型养殖半潜平台运动响应幅值有较大影响,在分析水动力性能时不能忽略,且文中的计算方法对实际工程设计有一定指导作用。

Based on the three-dimensional potential flow theory,the calculating and comparing study of the hydrodynamic performance of a new type of offshore semi-submersible farming platform in China is carried out.Through the AQWA module of ANSYS software,the added mass,potential flow damping coefficient and motion response amplitude(RAO)of the target platform in frequency domain are calculated,and their variation characteristics are analyzed.The influence law of viscous damping on the peak value of RAO is summarized by comparing the data in groups.The results show that the viscous damping has a great influence on RAO of the new semi-submersible farming platform,which cannot be ignored in the analysis of hydrodynamic performance.The calculation method in the paper has certain guiding function for the actual engineering design.