混合网格方法在水下潜器回转运动数值模拟中的应用  

Application of Hybrid Grid Method in Numerical Simulation of Underwater Vehicle Turning Motion

作　　者：张天 吴家鸣[1] 张强 ZHANG Tian;WU Jiaming;ZHANG Qiang(School of Civil Engmeering and Transportation,South China University of Technology Guangzhou 510640,China)

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《中国造船》2020年第S02期312-322,共11页Shipbuilding of China

基　　金：国家自然科学基金项目(51979110)。

摘　　要：针对不同计算域采用重叠和滑移的混合网格方法,对艉部设置了两个作为推进与操纵装置的导管螺旋桨的自主航行水下潜器平面回转运动进行了数值模拟,得到了水下潜器在回转状态下两桨的差速比与回转半径、回转时间的关系以及螺旋桨在作业工况下的压力分布状态。通过与全重叠网格方法计算结果对比,验证了采用混合网格方法模拟水下潜器回转运动的有效性。计算结果表明,重叠网格和滑移网格相结合的混合网格方法在占用较少计算资源的情况下,对水下潜器平面回转操纵运动数值模拟结果可靠,论文所采用的混合网格方法可为自主航行水下潜器回转性能预报分析提供一种实用手段。Turning motion of an autonomous underwater vehicle with two ducted propellers is numerically simulated.Relationship between the differential velocity ratio of the propellers and the turning radius or the turning time period is obtained by using the slip grid and the overlapping grid method in different calculation fields.Pressure distribution of the propellers is also obtained.Validity of the hybrid grid is verified by comparing calculation results from the overlapping grid.It is indicated that the hybrid grid method combining with overlapping grid and slip grid provides reliable results with less computational resources for the turning motion of autonomous underwater vehicles.

关 键 词：自主航行水下潜器 回转运动 混合网格方法 重叠网格方法 

分 类 号：U661.1[交通运输工程—船舶及航道工程]