光船对气液两相介质激光支持爆轰波影响的数值模拟

建立了气液两相介质单脉冲激光支持爆轰波的数值模型，结合光船边界条件，数值模拟爆轰波及其周围流场的演化过程，分析温度、压力、速度场在爆轰波发生时的变化特性和演化形态。研究表明:有无光船边界在30μs前爆轰波发展趋势基本一致。激光作用结束后，焦点范围处温度压力均达到最大，速度继续上升达到最大后逐渐衰减。温度最大值一直在焦点附近，压力最大值则是在激光作用时出现在中心处，激光作用结束后，转移到波阵面上，而速度最大值发生在冲击波波阵面上。光船模型中，冲击波会与壁面发生耦合作用，冲击波的反射与叠加作用使最大温度中心会向外偏移，压力和速度会在壁面与冲击波边沿接触面的两侧处达到最大值，向内侧逐渐减小。 

Numerical simulation of light-craft effects onlaser supported donation wave with gas-liquid two phase propellant

The numerical model of impulse laser supported donation wave with gas-liquid two phase propellant was established to analyze the evolution process of the donation wave and flow field, based on the actual light-craft boundary condition. The characteristics and evolution form of temperature, pressure, velocity field change were analyzed. The results showed: the development trend of donation wave was basically identical regardless of the craft at the first 30μs. At the end of laser action, the temperature and pressure reached to the maximum in the focal range. While the velocity kept rising to the maximum and then dropped gradually, the maximum temperature was near the focus, maximum stress occurred at the center and then transferred to the front of the wave, and maximum speed occurred on the shock wave. When combined with craft, the shock wave produced thrust coupled with the wall. The maximum temperature center shifted outward because of the shock wave reflection. The pressure and speed reached the maximum at two sides of the interface where the shock wave edge got to the wall, and then decreased toward the inside gradually.