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本文选取循环圆有效直径为560mm的YOX560型限矩型液力偶合器作为基型进行研究,建立了三维流道模型并进行了网格划分。利用滑移网格瞬态算法对限矩型液力偶合器内部流场进行CFD数值模拟计算,分析了其在不同充液率下不同工况时的内部流场速度矢量与压力分布的规律。同时对限矩型液力偶合器内部流场的环流特性进行了预测,分析了流体在工作腔、前辅腔、后辅腔之间的耦合流动特性。通过对比仿真计算结果与试验数据,分析了混合模型计算方法的正确性,对限矩型液力偶合器内部流场的研究以及流道结构参数的优化具有一定的参考价值。
In this paper, the YOX560 torque-limiting fluid coupling with an effective circular diameter of 560mm was selected as the base model, and a three-dimensional flow channel model was established and meshed. By using the slip-grid transient algorithm, the CFD numerical simulation of the internal flow field of the torque-limiting fluid coupling was carried out. The law of velocity vector and pressure distribution of the internal flow field under different conditions of different liquid filling rates was analyzed. At the same time, the circulation characteristics of the internal flow field of the torque limiting fluid coupling are predicted, and the coupling flow characteristics of the fluid in the working chamber, the front auxiliary chamber and the auxiliary auxiliary chamber are analyzed. By comparing the simulation results with the experimental data, the correctness of the hybrid model calculation method is analyzed. It is of certain reference value to the research on the flow field in the limit-torque fluid coupling and the optimization of the flow channel parameters.