摆动液压缸圆环螺旋流的流动及内泄漏研究  

THE FLOW AND INTERNAL LEAKAGE OF ANNULAR SPIRAL FLOW IN HYDRAULIC ROTARY ACTUATOR

作　　者：刘义伦[1] 刘伟涛[1] 李松柏[1] 

机构地区：[1]中南大学,长沙410083

出　　处：《力学与实践》2010年第5期27-30,40,共5页Mechanics in Engineering

摘　　要：考虑液压油的黏度随温度与压强的变化,以连续性方程、N-S方程、能量方程为基础,推导出螺旋摆动液压缸内部圆环螺旋流的速度方程及泄漏量方程.运用大型通用CFD仿真软件fluent对螺旋摆动液压缸内部的圆环螺旋流流场及泄漏规律进行数值仿真.对螺旋摆动液压缸内螺旋流动的理论计算与仿真结果进行对比分析,结果表明理论推导正确,从而为螺旋摆动缸内泄漏及容积耗损提供理论依据.Considering that the viscosity of the hydraulic oil will change accordingly when the temperature and pressure vary,the flow rate equation and leakage rate equation of the annular spiral flow in Hydraulic Rotary Actuator are derived based on continuity equation,N-S equation and energy equation.Using the CFD simulation software ＂Fluent＂,the flow field and the leakage law of the internal annular spiral flow are simulated.Comparing the simulation results with the theoretical calculation of the flowing annular spiral flow, the theoretical analysis is verified,which may provide a theoretical basis for studies of internal leakage and volume depletion in Hydraulic Rotary Actuator.

关 键 词：螺旋流动 内泄漏 泄漏量 CFD 螺旋摆动液压缸 

分 类 号：TH137[机械工程—机械制造及自动化]