摘要
本文通过实验研究了液体火箭发动机气液同轴离心式喷嘴的混合特性。利用两相探针技术，测量了喷嘴下游喷雾流场中气液流强和混合比分布，考察了喷嘴缩进比和气液喷注压降等参数对混合特性的影响。结果表明，气液同轴离心式喷嘴的缩进比对喷嘴混合特性有较大影响，增大缩进比将导致更窄的气液流强分布和更均匀的混合，而改变气液喷注压降将导致不同的流强和混合比分布规律。
This paper presents an experimental study on the mixing characteristics of gasliquid coaxial swirling injector of liquid rocket engine.A twophase probe technique was employed to measure the distributions of gas and liquid mass flux and mixing ratio in sprays. The effects of the recess ratio of injector and the pressure drop of gas and liquid injection on the mixing characteristics were investigated. The results show that the recess ratio of injector plays a significant role in the mixing between gas and liquid flows from the coaxial swirling injector. Increasing the recess ratio will result in more uniform mixing between gas and liquid,and changing the pressure drop of injection will result in different distribution of mass flux and mixing ratio.
出处
《国防科技大学学报》
EI
CAS
CSCD
1997年第4期9-13,共5页
Journal of National University of Defense Technology
关键词
气液同轴
喷嘴
混合特性
火箭发动机
液体推进剂
gasliquid coaxial swirling injector,mixing characteristics,recess ratio
