基于ANSYS的节流阀阀体优化设计

Optimized Design of Throttle Valve Body Based on ANSYS

摘要: 为研究节流阀结构参数对空化现象的影响，通过CFD软件对节流阀在变负载工况下的空化现象进行模拟仿真分析，并对关键几何参数阀体孔半径大小与阀座倒角长度进行响应面优化设计，比较相同开度下优化后的节流阀结构内部气泡体积，阀口处气泡体积大小最终决定最优结构参数。研究结果表明，不同的阀体孔半径大小与阀座倒角长度从小到大进行变化时对空化现象产生的气泡体积大小呈现出不同的趋势，增大阀座倒角长度并减小阀座倒角长度可以很好的抑制空化现象的产生。研究工作具有一定的理论意义和工程实用价值。

Abstract: In order to study the influence of throttle valve structure parameters on the cavitation phenomenon, through the CFD software on the throttle valve internal cavitation phenomenon simulation simulation analysis, and the key geometric parameters of the valve body hole radius size and seat chamfering length for the response surface optimization design, compared with different openings optimized throttle valve structure of the internal bubble volume, the size of the bubble volume at the valve port to ultimately determine the optimal structural parameters. The results show that different valve body hole radius and seat chamfer length from small to large changes in the size of the bubble volume generated by the cavitation phenomenon show a different trend, increase the length of the seat chamfer and reduce the length of the seat chamfer can be very good inhibition of cavitation phenomenon. The research work has certain theoretical significance and engineering practical value.