液力偶合器制动工况流场仿真与特性分析  

Simulation and Characteristic Analysis on Flow Field of Fluid Couplings During Braking

作　　者：宋彬[1] 吕建刚[1] 郭劭琰[1] 张晓涛[1] 孔凡[2] 

机构地区：[1]军械工程学院火炮工程系,石家庄050003 [2]石家庄陆军指挥学院,石家庄050084

出　　处：《机械设计与研究》2011年第1期26-30,共5页Machine Design And Research

基　　金：军队科研计划资助项目(20090426)

摘　　要：采用Mixture多相流模型、Realizable湍流模型与PISO算法,应用CFD软件对液力偶合器制动工况时流道内的气液两相流动进行数值模拟。通过分析不同气相体积百分比条件下流场的压力分布和速度分布,直观地揭示了气液两相介质在液力偶合器内的运动情况,探讨了制动工况泵轮转矩的变化规律,为液力偶合器结构的设计和改进提供一定的参考依据。Numerical simulation was performed for the gas-liquid two-phase turbulent flow in fluid coupling by using CFD snftware with Mixture model, PISO algorithm and Realizable turbulence model. The gas-liquid two-phase flow in fluid coupling was investigated by analyzing the distribution of static pressure and velocity vector. The experimental data was analyzed and compared with the braking torque numerical results. To some extent, the simulation results reveal details of the two-phase flow in fluid coupling, and provide references for fluid eoupling design and impruvement.

关 键 词：液力偶合器 气液两相流 外特性 计算流体力学(CFD) 

分 类 号：TH137.331[机械工程—机械制造及自动化]