Aerodynamic Resistance Reduction Technology Research on Microstructure Surface of High-speed EMU

Abstract

Aiming at three potential area for aerodynamic resistance reduction including the head type streamlined area, bogie region baffle and windshield area end wall, this paper put forward different shape, size and arrangement of microstructures. Through simulation and test, the feasible application for resistance reduction by using microstructure surface is obtained. Simulation and test results show that the area of bogie region baffle and windshield area end wall with microstructure surface has good resistance reduction effect, but the microstructure is not suitable for head type streamlined area. The microstructure surface provides a new way and technical support for deeply aerodynamic resistance reduction and design of higher level of high-speed EMU.