爆炸波与超声速飞行物体相互作用研究

摘要

In present paper,the unsteady flow field of a blast wave interaction with a sphere traveling in supersonic speed is determined using a shock-capturing,finite difference approach and hybrid scheme.The presented numerical results compare favorably with the available experimental data,and the weak contact surface of bow shock interaction with the reflected blast wave obtained is shown to agree better with that of experiment.The flow of a blast wave encountered a sphere traveling supersonically at -5° angel of attack is studied further.%本文数值模拟了超声速飞行物体与爆炸波相遇后产生的两波干扰流动，采用了激波捕捉、有限差分法和LU-TVD格式。同得到的实验结果对比，计算结果反映出了两波作用后的复杂流动，并且可清楚地看到飞行体头部产生的弱接触面，与实验符合较好，同时进一步模拟了飞行体以-5°攻角飞行时与爆炸波相遇后的流动。