中文摘要：

基于计算流体动力学对液力变矩器内流场进行了分析，利用多流动区域耦合算法中滑动网格法实现叶轮间流动参数的传递，建立液力变矩器涡轮、泵轮、流道模型实现了液力变矩器湍流流动的瞬态计算。对流场数据分析，核定出了气化高发部位，通过采用多相流模型植入流场一个气泡，数值研究了液力变矩器内气泡破碎机理和破裂高发区域。根据数值模拟和理论推定的气泡核化区、破碎区的气泡动力学行为特征可为液力变矩器的设计和改进工作提供参考意义。

英文摘要：

Based on computational fluid dynamics analysis of flow field in hydraulic torque converter. To realize the transfer between the impeller flow parameters by using the sliding mesh method for multi flow region coupling algorithm .In order to realize the transient torque converter turbulent flow calculation ,the torque converter turbine、pumpwheel and eharmel mode are established.By analysing flow field data approve the highest frequency region of vaporization. Using the multiphase flow model implant a bubble in flow field to numerical study in torque converter bubble breaking mechanism and rupture in high-risk areas.According to the numerical simulation and the theory of presumption of the bubble nucleation zone, fracture zone bubble dynamic behavior can make contribution to design and performance improve to hydraulic torque converter.