液力变矩器内三维非定常动静干涉流动计算

为研究液力变矩器内泵轮、导轮和涡轮间动静干涉引起的三维非定常流动特性,利用滑移网格技术和RNG k-ε湍流模型计算液力变矩器内湍流流动,得到泵轮全流道内流体压力的主要特征。仿真结果表明:泵轮全流道内流体压力脉动明显;在涡轮转速不变的情况下,压力脉动峰值与半径成正比;在相同半径处,压力脉动峰值与涡轮转速成反比。此外,由压力脉动值的频谱分析结果可知:随涡轮转速或监测点半径变化,泵轮全流道内各监测点压力脉动的频率成分基本一致,但各影响频率成分所占的比例不同。

Calculation of Three Dimension Unsteady Rotor and Stator Interaction Flow in Torque Converter

To study the three dimensions unsteady flow characteristics caused by interactions among pump,stator and turbine in torque converter,the turbulent flow of torque converter was simulated based on sliding mesh technique and RNG k-e turbulence model.Then,the main features of fluid pressure in the whole flow passage of pump were observed.The simulation results show that the fluid pressures present significant fluctuations in the whole flow passage of pump.The pressure fluctuation peak values are directly propor...