混合动力机车冷却间CFD分析及结构优化

CFD Analysis and Structure Optimization of Cooling Room of Hybrid Electric Locomotive

以混合动力机车冷却间为研究对象,利用计算流体动力学软件ANSYS-FLUENT对冷却间内部进行仿真分析.研究空气滤清器,通风机和冷却风扇处空气流量以及散热器的通风冷却情况,提出对散热器风扇总成的结构优化方案.经过对比计算结果并分析两种方案可知,改进方案能够在相同条件下达到设计要求,并同时有效降低散热器的温度,缓解初始方案中通风死区的影响以及散热器温度集中的问题.

Taking the cooling room of hybrid electric locomotive as the research object,the internal of the cooling room is simulated and analyzed by using computational fluid dynamics software ANSYS-FLUENT.The air flow of the air filter,ventilator and fan is searched,the cooling conditions of the radiators are studied,and the structural optimization scheme of the radiator fan assembly is proposed.By comparing the calculation re-sults and analyzing the two schemes,the improved scheme can meet the task book standard under the same conditions,effectively reduce the temperature of the radiator,and alleviate the influence of the dead zone of ventilation in the original scheme and the problem of temperature concentration of the radiator.