论文部分内容阅读
针对喷管不足膨胀冲击喷流具有复杂波系结构的特点，应用高分辨率的ＴＶＤ格式建立了求解轴对称Ｎ－Ｓ方程的数值研究方法．对一定压比的冲击喷流在不同的喷管和平板间距下的流场进行了数值计算，得到了冲击喷流的复杂波系．对冲击喷流中盘形激波的形状、冲击平板的压力分布以及二者的关系进行了研究分析，揭示了冲击喷流产生分离泡的机理．
In view of the complex wave structure of the expanding jet of jet with insufficient jet, a numerical method for solving the axisymmetric N-S equation is established by using the high resolution TVD format. The numerical simulation of the flow field under a certain pressure ratio is carried out under different nozzle and plate spacing, and the complex wave system of the impinging jet is obtained. The shape of the shock wave in the impinging jet, the pressure distribution of the impingement plate and the relationship between the two are studied and analyzed, and the mechanism of the bubble generated by the impinging jet is revealed.