基于动网格的火箭炮三维流场数值模拟与分析

Numerical Simulation Analysis Based on Dynamic Mesh for 3D Flow Field of Rocket Launcher

在火箭炮发射过程中,燃气射流对发射箱体的冲击流场非常复杂,精确计算火箭炮对箱体的冲击流场比较困难。根据火箭炮结构,简化出单管三维非定常流动模型。实体建模时,采用动网格技术模拟火箭弹的运动。通过流体动力学软件对三维流场进行数值模拟,计算出火箭炮流场分布。

In the process of rocket launching, the impact flow field on the emission box from the gas jet is very complex. It isrelatively difficult to calculate the flow field accurately. This paper simplifies the single-tube three-dimensional non-steady flow model according to the rocket launcher structure, uses the dynamic mesh to simulate the motion of the rocket, carries out the numerical simulation of the three-dimensional flow field by use of fluid dynamics software and calculates the rocket flow field distribution.