阀芯运动过程液压锥阀流场的CFD计算与分析  

Analysis and CFD Simulation of the Flow Filed in a Moving Poppet Valve

作　　者：郑淑娟[1] 权龙[1] 陈青[1] 

机构地区：[1]太原理工大学机械电子工程研究所

出　　处：《农业机械学报》2007年第1期168-172,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:50675147)

摘　　要：应用CFD方法对阀芯运动状态下流体在锥阀内的流动状态进行了可视化计算和分析研究。参照实际锥阀的结构和参数,用CAD软件Pro/E建立了阀内流道的三维几何模型。应用前处理软件Gambit进行了网格的划分、细化,用自定义函数UDF确定了阀芯运动速度。应用Fluent中动网格技术进行了计算研究,获得了阀芯开启、关闭过程受到的瞬态液动力、流量系数与通过阀流量、阀开口度之间的定量关系。The flow field in a moving cartridge poppet valve is simulated and analysed with CFD technique. The 3-D geometric model of the valve is established by using software Pro/E according to the practical parameters and structure of the standard cartridge poppet valve. The mesh of the model is generated and fractionized by the preprocessor Gambit. When valve is under moving state, the simulation is carried out with dynamic mesh method, the moving speed is giving by using self defined function UDF, The relationship between transient flow force acting on the valve cone and the discharge coefficient to the flow and valve displacement during closing and opening of valves are obtained.

关 键 词：液压锥阀 液动力 CFD 流量系数 

分 类 号：TH137[机械工程—机械制造及自动化]