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随着列车运行速度的不断提高,列车车体表面空气流场发生变化,从而改变了列车空调机组的运行工况,使得列车空调机组的性能受到影响.利用FLUENT软件对不同工况下高速列车外部流场进行数值模拟,得出高速列车表面气流压力场分布及其表面具体位置的压力值,进而分析了列车提速对空调机组冷凝风压、冷凝风量、冷凝温度及制冷系数等性能的影响.研究结果为高速列车空调机组的优化设计提供了一定的理论依据.
With the continuous increase of train speed, the air flow field on the surface of train body changes, which changes the operating conditions of train air-conditioning units, which will affect the performance of train air-conditioning units.Using FLUENT software, The numerical simulation of the flow field and the pressure field distribution on the surface of the high-speed train and the pressure value of the specific location on the surface of the train are obtained, and then the influence of train speed increase on the performance of condensing air pressure, condensing air volume, condensation temperature and refrigeration coefficient of air- The results provide a theoretical basis for the optimal design of high-speed train air conditioning unit.