Aerodynamic Analysis of Camera Device Installed on EMU
A three-dimensional numerical simulation model of the pantograph camera device for EMU is established.The finite volume method is used to solve the three-dimensional,compressible,steady N-S equation and RNG k-εequation turbulence model to simulate the aerodynamic performance under open line operating conditions,and the velocity distribution,pressure distribution and other flow field characteristics of the external flow field of the camera device are obtained.The calculation results show that the transition between the camera cover and the outer outline of the train should be streamlined as far as possible,the longitudinal radius of the curve transition area should be larger than 500 mm as far as possible,and the minimum requirement should not be less than 250mm.It is suggested that the installation angle of the leeward glass window should be reduced to reduce the pneumatic differential pressure resistance of the camera device.At the same time,on the basis of ensuring the streamline of the outer contour,the surface area of the camera device is reduced as much as possible,and the aerodynamic friction resistance is reduced.
万方数据
维普
