液体离心式喷嘴脉动流量测量方法

Conductance measurement method of pulsing flow in liquid swirl injector

为了对离心喷嘴动态特性进行实验研究,根据离心喷嘴内部流动的特点,以多孔钛材料为电极并结合锁相放大电路研制了一种离心喷嘴内部脉动流量的测量装置,并对敞口型模型离心喷嘴进行了实验测量。初步实验结果表明此方法及测量传感器可用于离心喷嘴内部脉动流量测量,对离心喷嘴动态特性的实验研究具有重要意义。

In order to investigate dynamic characteristic of swirl injector experimentally, an inner pulsing flow measurement method has been developed according to the characteristics of the liquid flow in swirl injector. Experimental measurement of open-end swirl injector was conducted with this sensor. The experimental results show that the method and sensor can meet the requirement of pulsing flow measurement in the swirl injector. It has remarkable significance for the experimental investigation of swirl injector dynamic characteristic and LRE unstable combustion.