喷射器基本方程及其性能的研究

本文对喷射器的性能进行了模化试验研究,发现除面积比、喉嘴距和扩散管对喷射器性能有影响外,混合室锥部压力的明显变化以及被抽吸物的物性是两个不可忽视的因素。由此探讨了喷射器的理论,推演出较具普适性的基本方程,提出确定壁面反力系数、动量修正系数的简易方法。

A Study of Injector-pump on Its Fundamental Equation and Properties

A test research has been made on the properties of the injector-pump. It is found that besides the area ratio and the distance between the jet-exit and the inlet of throat-duct, the obvious variation of pressure of the convergent part of the mixing chamber and the physical properties of the suctioned materials are also two main factors that should not be neglected. The theory of injector-pump has also been expounded. This paper presents the fundamental equation of jet pumps suitable for various cases. The factor of wall-Back-Force and a simple method for solving the momentum equation are also presented.