液压滑阀U型节流槽速度场的CFD解析

摘要

针对液压滑阀内部结构的复杂性，以及各参数对液压滑阀流场影响的不确定性，建立了U型节流槽液压滑阀计算流体动力学（computationalfluiddynamics，CFD）三维模型，分别从阀口开度、槽口深度和工作压差3个方面对该模型进行分析，得出液压油速度场分布以及高速射流区域的形状和大小的变化趋势，计算结果以可视的图形图像形式给出。%Aiming at the structural complexity and the uncertainty of parameters＇ affection on velocity, the three di- mensional model of the U-notch spool valve was built by CFD （Computational Fluid Dynamics） method. Simula- tions were analyzed for different pressures, openings and notch depths; the distribution of velocity field in spool valve and the varying trend of shape and size of high speed area were obtained. The outcome was showed by visual pictures. This study has some instructional meaning for the spool valve design.