“中华之星”号高速列车司机室过渡曲面局部空气压力分布研究

“中华之星”号列车端部流线型长度达到5.5m,且采用双拱外形。司机室向车体顶部过渡曲面曲率较大,容易产生流动分离现象,为检验端部流线型外形设计的合理性,采用数值模拟计算和实车试验相结合的方法对其局部表面空气压力分布进行研究。研究结果表明:动力车司机室向车体顶部过渡曲面局部表面未发生流动分离。

Research of air pressure distribution on the part of the transition curve surface from the cab to the top of China Star high-speed train

The head stream-line shape of China Star train is5.5m long and with a double arched outline.Be -cause the curvature of the transition curve surface from the cab to the top is quite big,it can easily result in flow sep-aration.In order to test the rationality of the stream-line shape design of the head,the air pressure distribution on the part of the transition curve surface is investigated through numerical simulation calculation and real train tests.The re sult in di cates that there isn't any flow separation on the part of the tran sition curve surface.