吸气式激光推进推力产生机理的数值模

Numerical simulation of thrust generating mechanism for air-breathing laser propulsion

摘要: 采用二阶精度的Roe格式，分别采用完全气体模型和高温平衡气体模型，对激光引致的激波在流场中的传播以及轴对称激光推力器的推力产生过程进行了数值模拟，揭示了大气吸气模式激光推进的推力产生机理。结果表明，采用高温平衡气体模型可以更精确地模拟等离子体流场的演化过程，计算所得的冲量耦合系数与已有实验结果吻合较好。
- 爆炸力学 /
- 流场演化 /
- 数值模拟 /
- 激光推进 /
- 大气吸气模式
Abstract: By using a Roe scheme of 2nd-order space accuracy and a MUSCLE approach, the propagation of laser-induced shock wave and the thrust generating process of axisymmetric laser thruster were simulated numerically under the air model of perfect gas and high-temperature equilibrium gas to explore the thrust generating mechanism of air-breathing laser propulsion. The result indicates that high-temperature equilibrium gas model can give a more accurate result than perfect gas model.
- mechanics of explosion /
- fluid field evolvement /
- numerical simulation /
- laser propulsion /
- air-breathing mode