一种航行体水弹道的数值仿真与试验研究

Numerical simulation and test research of a certain vehicle underwater trajectory

针对一种航行体复杂的水弹道特性,对流固耦合数值计算方法进行分析,并在此基础上采用MSC.DYTRAN有限元分析软件建立起航行体水弹道仿真计算模型,应用该模型计算得到航行体水中运动规律。研究了水弹道缩比试验相似准则及测试方法,开展多发次缩比试验获取了航行体水弹道特性。仿真计算和缩比试验结果的对比分析表明二者一致性较好,试验和计算方法能够为相似研究提供指导。

In view of complicated underwater trajectory feature of a certain vehicle, fluid - solid interaction numerical calculation method was studied. The numerical simulation modular for underwater trajectory of vehicle was built with MSC. DYTRAN, a kind of FEA software. So the underwater trajectory feature was calculated based on the modular. Meanwhile, the similarity criteria of underwater trajectory scaled experiment and measurement method were studied. The whole underwater trajectory rules were acquired by tens of scaled experiments. The simulation calculation data and test data were compared and analyzed, and it shows that the calculation data and test data coincides with each other, so the calculation and test methods can offer advice for the similar design.