喷管采样法试制列车安全检测装置的研究

Studies of the Method of Sampling of Nozzle Concerning the Development of the Train Safety Test Equipment

根据空气动力学原理阐述喷管采样系统和讨论如何构造列车运行安全检测装置，并计算喷嘴尺寸和在管内超临界流动的空气流量。

Presents the sampling system of the nozzle and discusses how to structure the train safety test equipment according to the theory of the aerodynamics.The size of the nozzle and the rate of flow of supercritical fluid in the tube are calculated.Finally, an applied example is given.