基于SIMPLEC算法的液力缓速器全流道仿真与试验验证

摘要

Based on ANSYS FLUENT 14.5 simulation platform , using RNG κ-ε double equation model and SIMPLEC solution algorithm based on pressure-speed, numerical simulation analysis was carried out in internal flow field of whole-flow-passage of VR120 hydraulic retarder .Braking-torque was obtained in different speed , and relation formula was established between torque and speed by data fitting.Meanwhile, braking-torque of hydraulic retarder in different speed was measured by transient test bed , and compared with results of numerical simulation analysis .The results show that the test value and the simulation analysis have the same trend of chan-ging, both errors less than 10%.It was verified that the simulation analysis of hydraulic retarder by using SIMPLEC algorithm is feasi -ble and effective , which will provide reference for further design of hydraulic retarder .%基于ANSYS FLUENT 14.5仿真平台，选用RNG κ－ε双方程模型与基于压强－速度的SIPMLEC 求解算法，对VR120液力缓速器内流场进行全流道数值仿真分析，得到不同转速下的制动扭矩值，并通过数据拟合，建立制动扭矩与转速之间的关系式；同时，利用工况试验台，测定液力缓速器在不同转速下的制动扭矩值，并与数值仿真分析结果进行比较，结果表明：试验测定值与仿真分析值变化趋势一致，误差都在10％以内，验证了应用该算法对液力缓速器进行仿真分析是有效可行的，为液力缓速器的进一步设计提供参考依据。