液力缓速器及其液压控制系统耦合流动特性的联合仿真研究  

Joint Simulation of Coupled Flow in Hydrodynamic Retarders and Its Hydraulic Control System

作　　者：孔令兴 魏巍[1,2] 闫清东 陈雪梅[1,2] 黄琰 KONG Lingxing;WEI Wei;YAN Qingdong;CHEN Xuemei;HUANG Yan(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081;Advanced Technology Research Institute,Beijing Institute of Technology,Jinan 250098;Racobit Intelligent Traffic System(Beijing)Technology Co.,Ltd,Beijing 100081)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京理工大学前沿技术研究院,济南250098 [3]理工雷科智途(北京)科技有限公司,北京100081

出　　处：《机械工程学报》2024年第12期355-364,共10页Journal of Mechanical Engineering

基　　金：山东省重点研发计划(2020CXGC010118);济南市科技计划(202126006);国家自然科学基金(51475041,51805027);国家部委基础产品创新计划(237099000000170009)资助项目。

摘　　要：以液力缓速器及其液压控制回路组成的复杂流动特性为研究对象,针对常规仿真研究中将液压、液力元件单独进行仿真的方法无法体现二者之间相互作用、容易引起仿真结果偏差的问题,在缓速器轮腔三维流场仿真和液压系统一维建模仿真的基础上,利用TCP/IP接口实现两种仿真平台的数据交互,在缓速器入出口处建立起实时双向动态交互边界,实现了对缓速器集成流动的一体化联合仿真。利用所建立的联合仿真方法可以对液力缓速器在液压控制系统作用下的工作特性进行仿真预测,对制动转矩特性预测的结果与试验结果偏差在5%以内,且可以避免单纯进行流场仿真时,由于入出口流动性缺失造成的反馈压力数值的偏差。该一体化联合仿真方法为研究缓速器及其液压控制系统工作特性提供了一种有效工具,并可进一步推广至复杂流动与控制相关应用领域。The complex flow characteristics of hydrodynamic retarder and its hydraulic control circuit is taken as research object.Aiming at the problem that traditional separated simulation of hydrodynamic and hydraulic components causes missing of internal interaction and deviation of simulation results,a joint simulation method is proposed based on 3D computational fluid dynamics(CFD)simulation of retarder chamber and 1D modeling of the hydraulic system.TCP/IP interface is utilized to realize data interaction between two simulation platforms so that a real-time,bidirectional dynamic interaction inlet and outlet boundary can be established.Using the proposed method,working characteristics of the retarder under the control of hydraulic system can be predicted.The deviation between the predicted results and the experimental results is less than 5%,and the deviation of the feedback pressure value caused by lack of fluidity between inlet and outlet can be avoided.The joint simulation method established in this paper provides an effective tool for studying the working characteristics of retarder and its hydraulic control system,and can be further extended to related application fields where complex flow and control is involved.

关 键 词：液力缓速器 液压控制 集成流动 CFD 联合仿真 

分 类 号：TH137[机械工程—机械制造及自动化]