钣金型液力变矩器内部流场的分析

Analysis on flow field of fabrication hydraulic torque converter

通过对某型号钣金型液力变矩器结构进行简化,借助Unigraphics、Gambit软件平台,结合现代计算流体力学理论,利用流体仿真软件FLUENT对变矩器内部流场进行了数值计算。结果表明:这种方法的计算结果与试验结果具有很好的一致性;在启动工况和最高效率工况下,泵轮入口附近,非工作面和外环附近出现了高速高压区,工作面与外环相交处有低速低压区,涡轮的内环面与工作面相交的地方出现了脱流和回流,流道曲率变化最大的地方出现了高压区;导轮在启动工况下,非工作面上有脱流和低速区,最高效率工况下,速度和压力分布相对较好。

Based on the Unigraphics and Gambit platform, and modern computational fluid dynamics theory. This paper simplifies the frame of the fabrication hydraulic torque converter, and calculates the inner flow field with emulation software FLUENT. The results show that： there is a good coherence between calculation results and experiment ones; in the condition of the start and the most efficiency working state, there are high velocity and pressure fields near the entrance, non-working face and shell of the pump, and the biggest change of the curvature of the turbo, low velocity and pressure fields near the intersect of the working face and shell; there are reverse flow and off flow near the intersect of the shell and working face; in the condition of the start working state, there are off flow and low velocity flow on the non-working face of the stator, in the condition of the most efficiency working state, there is a good disposal of the velocity and pressure on the stator. 2 tabs, 4 figs, 10 refs.