液压滑阀U型节流槽速度场的CFD解析

CFD Simulation of the Velocity Field on the U Notch Spool Valves

1.
School of Mechanical Engineering, Southwest Jiaotong University, Sichuan 610031

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(computational fluid dynamics,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。
- 液压滑阀 /
- 速度场 /
- 计算流体动力学
Abstract: 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.
- spool valve /
- velocity field /
- CFD(computational fluid dynamics)

[1]	Amirante R,Del Vescovo G,Lippolis A.Evaluation of the flowforces on an open centre directional control valve by means of acomputational fluid dynamic analysis[J].Energy Conversionand Management 2006,47:1748～1760
[2]	刘晓红,柯坚,刘桓龙.液压滑阀径向间隙温度场的CFD研究[J].机械工程学报,2006,(5):232～234
[3]	金朝铭.液压流体力学[M].北京:国防工业出版社,1994
[4]	柯坚.现代水压驱动技术[M].西南交通大学出版社,2002
[5]	Del Vescovo G,Lipposium A.CFD analysis of flow forces on spoolvalves[A].Proceedings of the First International Conferenceon Computational Methods in Fluid Power Technology[C],Melbourne,2003
[6]	冀宏.液压阀芯节流槽气穴噪声特性的研究[D].杭州:浙江大学,2005