摘要
采用有限体积法对燃气阀内流场进行三维冷气模拟和燃气模拟,并用冷气试验验证,表述了所研究阀门内流场的特点,得到入口压力与阀芯受力之间的线性关系;比较了3个不同弹性系数的弹性元件的入口压力与阀门质量流量,得到入口压力与阀门质量流量之间的二次曲线关系,小的弹性系数和低燃气温度使调压阀调压能力增强;分析了燃气模拟的结果,并与冷气模拟的结果进行了对比,提出对阀芯和阀座进行重点热防护的建议。
Three-dimensional cold flow and hot gas simulation for internal flow field of gas valve was performed by using finite volume technique and the result was verified by cold flow experiment. The characteristics for the flow field of gas valve were explained. Linear relationship between inlet pressure and force on the spool was obtained. The inlet pressure and the valve mass flux a- mong three elastic components with different elastic coefficients were compared, and conic relationship between the inlet pressure and the valve mass flux was obtained. Low elastic coefficients and gas temperature can enhance regulating ability of pressure regulating valve. Finally hot gas simulation results were analyzed and compared with cold flow simulation results. Some advises on thermal protection for spool and bonnet were proposed.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2007年第3期210-213,共4页
Journal of Solid Rocket Technology
关键词
燃气阀
内流场
数值计算
弹性系数
gas valve
internal flow field
numerical calculation
elastic coefficient
