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根据三维定常不可压N-S方程和两方程湍流模型,通过FLUENT流体分析软件,对时速200km/h的CRH6某型号列车在横风环境下的气动流场进行了数值模拟,计算了不同风速情况下车身表面压力系数,分析了车速表面压力分布的规律。研究结果表明:随着横风速度(0-40m/s)增大,司机头室最大正压区向迎风侧偏移、扩大,司机尾室最大负压区向迎风侧偏移、缩小,对车身表面的强度要求增大。
According to the three-dimensional steady incompressible Navier-Stokes equations and the two-equation turbulence model, the aerodynamic flow field of CRH6 train with a speed of 200 km / h at cross-wind environment was simulated by FLUENT fluid analysis software. Surface pressure coefficient, analyzed the law of surface pressure distribution of speed. The results show that with the increase of cross wind velocity (0-40m / s), the maximum positive pressure zone of driver’s head moves to the windward side and expands, and the maximum negative pressure zone of driver’s tail chamber shifts to the windward side, Body surface strength requirements increase.