低温推进剂加注管道流动特性模拟研究  

Simulation Study on Flow Characteristics of Cryogenic Propellant Filling Pipeline

作　　者：刘宗虎 王富强 LIU Zonghu;WANG Fuqiang(Xi’an Aerospace Test Technology Research Institute,Xi’an 710100,China)

机构地区：[1]西安航天动力试验技术研究所,西安710100

出　　处：《河南科学》2020年第4期580-585,共6页Henan Science

基　　金：国家自然科学基金项目(51301132)。

摘　　要：以某航天低温推进剂加注系统为研究对象,按照加注系统实际尺寸建立了低温推进剂真空加注管路三维仿真模型.依据实际加注工序与参数,利用Fluent仿真模拟软件研究了推进剂在不同的进/出口压力下的加注动态特性.模拟结果表明,加注管道进/出口压力对加注效率有直接影响,在出口压力一定时,进口压力越大,加注管道进口速度越大;随着加注过程进行,出口压力逐渐升高,加注管道出口速度变小;管道特性模拟结果和试验结果吻合度较高.该方法可用于加注系统方案的设计及加注工艺参数的优化.Taking a spaceflight cryogenic propellant filling system as the research object,a three-dimensional simulation model of the cryogenic propellant vacuum filling pipeline was established according to the actual size of the filling system.Based on the actual filling process and parameters,the Fluent simulation software was used to explore the filling dynamic characteristics of propellants under different inlet/outlet pressures of the filling pipeline.The results show that the inlet/outlet pressure of the filling pipeline has a direct impact on the filling efficiency.Under the condition of a certain outlet pressure,the larger the inlet pressure is,the higher the inlet speed of filling pipeline is.As the pressure rises,the outlet speed of filling pipe decreases.The simulation results of the pipe characteristics agree with the experimental measurement results.This method can be used for the design of the filling system scheme and the optimization of the filling process parameters.

关 键 词：推进剂 加注管道 流动特性 模拟 

分 类 号：TB611[一般工业技术—制冷工程]