导弹垂直发射中二次流流场计算

本文应用Ｇｏｄｕｎｏｖ方法对导弹垂直发射系统的内流场进行了数值模拟，详细描述了导弹点火后二次流的形成及其对弹体的影响，为导弹的设计和发射系统的热防护提供参考。

A NUMERICAL CALCULATION OF SECONDARY FLOW'S FLOWFIELD FOR THE MISSILE VERTICAL LAUNCHING SYSTEM

This paper applies the method of Godunov to calculate the internal flowfield of Vertical Launching System(VLS).The Secondary flow's formation after motor ignition and its effect on missile are described in detail. It provides scientific basis for the design of missile and the heating protection of the VLS.The paper gets more satisfactory numerical results by solving inviscid Eulerian Equation in the axsymmetric cylindrical coordinates,especially, it well "captures" the shock wave and spreads the thickness of shock wave over two computational cell.The calculation results indicate that the Godunov's Method employed to solve the supersonic internal flow-field is very successful,its results are stable and reliable.The results are identical to the experimental data and complotely agree with the calculation by J. J.Yagla and L. P. Anderson.