一种基于切片法的分层海流下运载器附加扰动力计算方法  

Calculation of Additional Turbulent Force by Slicing Method for Underwater Unpowered Vehicle under Layered Ocean Current

作　　者：邱海强[1] 袁绪龙[1] 王亚东[1] 刘传龙[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《鱼雷技术》2013年第5期337-341,共5页Torpedo Technology

摘　　要：由于海流的复杂性,在水下无动力运载器的弹道计算中,仅以恒定海流速度求解其附加扰动力的常规方法存在较大误差,影响了运载器的出水姿态。本文在用计算流体力学(CFD)方法求得其流体动力无因次系数的基础上,采用切片法计算得到运载器的附加扰动力。并对两种方法在均匀海流和分层海流两种情况下附加扰动力的计算结果进行了比较,结果表明,均匀海流下两种方法的计算结果一致,而在分层海流下,若选择合适的切片数,使用切片法的计算结果比常规方法要精确。Conventional additional turbulent force calculation method based on constant ocean current velocity intro- duces large error in the trajectory calculation of an underwater unpowered vehicle due to complexity of ocean current, which influences the vehicle attitude of water outlet. This paper calculates the additional turbulent forces of the vehicle by using the slicing method based on the non-dimensional hydrodynamic coefficient obtained with CFD method, and compares the forces with the ones from conventional method under even ocean current and layered ocean current. Con- clusions are drawn that the results obtained with both conventional and slicing methods are consistent with each other under even ocean current, while the slicing method can achieve more accurate result under layered ocean current by selecting proper slicing number.

关 键 词：切片法 分层海流 无动力运载器 计算流体力学 

分 类 号：TJ630.1[兵器科学与技术—武器系统与运用工程]