一种水下非均质拖曳线列阵动力学仿真方法及试验验证

基于Ablow和Schechter经典差分方法,分析水下非均质拖曳线列阵的受力特性,建立其空间运动控制方程.采用中心差分法和牛顿迭代法对运动控制方程进行离散及时间和空间上的迭代求解,获得水下非均质拖曳线列阵的动力学特性.在此基础上,结合非均质线列阵实尺度模型,设计并开展湖中的实航拖曳试验,分析比较了试验数据与仿真结果.研究表明,本文提出的数学仿真方法有效可靠,可为水下非均质拖曳线列阵动力学特性分析提供一种有效的技术手段.

A dynamic simulation method and experimental verification of underwater heterogeneous towed linear array

Based on Ablow and Schechter's classical difference method, the underwater heterogeneous towed linear ar-ray's motion control equation is set up for analyzing the force on the array. To obtain the towed linear array's dynamic char-acteristic, central difference method is used to discretize the control equation, then this un-linear equation is iterated and solved on both time and spatial domain by Newton iteration method. On this basis, an experiment is designed and ran by us-ing a prototype of the array in the lake, and a comparison analysis of the test and simulation data is given. The results show that the mathematical simulation method given by this paper is feasible, and it can be an useful technological mean to ana-lyze the dynamic characteristic of the underwater heterogeneous towed linear array.