中文摘要：

基于CFD软件平台,利用滑移网格的方法,将液力缓速器定子和转子之间的接合面命名为网格分界面（interface）,用它来传递不同子域间的工作液的流动信息。采用了RNG k-ε模型和SIMPLEC算法对不同叶片倾角的液力缓速器进行三维数值模拟和分析,得到了缓速器内部流场的压力及速度分布云图,进一步对制动力矩进行比较。结果表明：叶片倾角在36°到51°的范围里,随着叶片倾角的逐渐增大,制动力矩逐渐增加大;当叶片倾角增大到43°后,制动力矩开始逐渐减小。

英文摘要：

Based on CFD software platform, the joint surface between the rotor and stator of the hydraulic retarder was defined as interface to transfer the flow data of different subdomains by moving mesh theory. Numerical simu- lation of different dip angle of hydraulic retarder was performed with the RNG k-ε turbulence model and SIMPLEC alzorithm simultaneously. The characteristics of velocity and pressure distribution were analyzed through the numerical simulation and post-processing. By the calculation braking torque and the simulation result, the brake in- creases with the blade dip angle decreasing, but the brake torque decreases when the dip angle is smaller than the angle of 43 degree.