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用特征线法对导弹垂直发射燃气排导系统中喷管羽流流场及羽流对垂直放置的平板的冲击进行了计算。对羽流中激波的计算通过严格的激波计算方法和简化的方法的对比,提出了一种简化的方法,特别是对马赫盘位置的确定也提出了一种准确而简化的方法,以适合于工程计算,对羽流冲击垂直的底板也提出了一种计算方法,并把理论计算结果与实验测试进行了对比,实验是在缩比实验装置上进行的,用压力传感器测量了底板中心的气流滞止压力,理论计算的压力和实验测得的数值相符合,说明理论计算方法的可靠性和准确性。
The characteristic line method was used to calculate the plume flow field and the impact of plume on the vertically placed slab in the vertical launching gas guiding system. Computation of shock waves in plumes A simplified method has been proposed by comparing the rigorous shock calculation method with the simplified one, and an accurate and simplified method has also been proposed for determining the Mach plate position Which is suitable for engineering calculation. A calculation method is also put forward for the floor with vertical plume impact, and the theoretical calculation results are compared with the experimental test. The experiment is carried out on a shrinking ratio experimental apparatus, and the pressure sensor measures the center of the floor Of the stagnation pressure of air flow, the theoretical calculation of pressure and experimentally measured values are consistent, indicating that the theoretical calculation method of reliability and accuracy.