水压锥阀阀口气穴数值模拟与可视化研究  

Cavitations Simulation and Visualization Research of Water Hydraulic Poppet Valve

作　　者：杨和梅[1] 陈云富[1] 

机构地区：[1]南京农业大学工学院,南京210031

出　　处：《科学技术与工程》2010年第8期1972-1975,共4页Science Technology and Engineering

摘　　要：气穴是研制水压阀存在的主要难题。认识阀口形状与气穴的关系,避免产生气穴现象极其重要。应用有限体积数值计算方法针对阀座倒角长度变化对水压阀阀道内流场的影响进行数值模拟和可视化研究,得到了一些有益的结论:倒角长度的改变对阀口间隙以及阀芯锥面与柱面相接的地方的负压会产生比较大的影响。Cavitations is the major problems of designing water hydraulic valve, understanding the relationship between shape of valve and cavitations, avoiding cavitations is extremely important, The numerical simulation and visualization research of flow field is carried out to research relation between the flow field of poppet valve and the length of valve seat by finite volume numerical method. It is some useful conclusions： the negative pressure of the connecting place of cone and cylinder will produce relatively large effects with changing of length of valve seat and chamfer.

关 键 词：水压阀 气穴 阀口 

分 类 号：TH137.52[机械工程—机械制造及自动化]