基于一维/三维耦合仿真的工程机械冷却系统优化设计  

Optimized Design of Cooling System of Construction Machinery Based on 1-D /3-D Coupling Simulation

作　　者：彭玮[1] 田杰安[1] 雷舒蓉 闫伟[1] 郭峰[2] 王应梁[2] 

机构地区：[1]山东大学能源与动力工程学院,山东济南250061 [2]中国人民解放军驻六一七厂军代室,内蒙古包头014030

出　　处：《内燃机与动力装置》2014年第2期24-27,共4页Internal Combustion Engine & Powerplant

基　　金：国家十二五科技支撑计划(2011BAG04B02):工程机械用串联式混合动力系统开发;山东省科技发展计划(2011GGX1040):汽车散热器优化设计平台研发

摘　　要：本文针对一款设计中的工程机械冷却系统,建立了一维数值模型与三维CFD模型。通过一维/三维耦合计算,研究在散热器模块串联安置并留有间隙的情况下,部分空气绕过前排散热器流动对工程机械冷却系统换热性能造成的影响。将CFD计算结果的风速数据嵌入标准的一维数值模型,对一维仿真计算进行修正。修正后,前排低温油散热器尺寸需要增加约11.3%,经实验验证满足要求。一维/三维耦合仿真使冷却系统热管理仿真计算的精度得到提高,使一维仿真结果更加接近实际情况。Both 1 - D numerical model and 3 - D CFD model for the construction machinery cooling system are built. Concerning the fixing clearance of the radiators in series arrangement, 1 - D/3 - D coupling simulations are utilized to study the influence on heat exchange performance of the cooling system of the construction machinery when the air is being diverted sideways around the front radiator. Airflow velocity magnitudes of CFD simulation are embedded in the standard 1 - D numeri- cal model to correct the 1 - D numerical simulation. After correction, the size of the front radiator needs to increase 11.3%. The simulation results are validated with experimental tests. The 1 - D/3 - D coupling simulation can improve the accuracy of a thermal management simulation of the cooling system, so the simulation results are closer to the actual situation.

关 键 词：冷却 热管理 一维 三维耦合仿真 CFD 

分 类 号：U464.1[机械工程—车辆工程]