减压器开启过程内部流场的动态仿真和特性研究  

Simulation of transient flow field and dynamic characteristics of pressure reducing valve during start-up

作　　者：郑丽[1,2] 李清廉[1] 罗泽明[2] 沈赤兵[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073 [2]海军飞行学院,辽宁葫芦岛125001

出　　处：《火箭推进》2009年第1期36-40,共5页Journal of Rocket Propulsion

摘　　要：针对自主研制的大流量气体减压器,以研究其开启过程内部流场的变化和动态特性为目的,建立了减压器工作过程的二维数学模型,采用动网格技术和流固耦合仿真技术,将气体的流动和活动组件的运动耦合起来,实现了减压器开启过程中内部流场的动态仿真。同时,通过对流场中不同位置参数的监测,进行了基于动态流场的开启过程动态特性研究。In order to learn the transient flow field and dynamic characteristics of peessure reducing valve during start-up process, a 2-D mathematical model for a large flux pressure reducing valve （PRV） is established and the dynamic mesh and fluid-solid coupling simulation technique is developed in this paper. The internal flow field and the movement of the valve core is coupled. The transient flow field of startup process is simulated. Based on the simulation the dynamic characteristics of the PRV are studied through inspecting the parameters of diffrernt positions.

关 键 词：减压器 内流场 动态特性 流固耦合 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]