Aerodynamic Lift Force of High-speed Maglev Train

doi:10.3901/JME.2020.08.228

Abstract

Abstract: The aerodynamic lift force is one of the key aerodynamic loads for the suspension and guidance system of high-speed maglev trains (HSMT). The computational fluid dynamics (CFD) method is adopted to study the lift force distribution laws of HSMT with five carriages and the influencing factors are discussed. The results show that the distribution laws of the lift force of the leading car and trailing car are worst. The bottom structures of the HSMT has a serious influence on the lift force and the air gap flow field between the bottom and the railway determines the distribution of the lift force. A method of controlling train lift force by controlling the air flow in the air gap space is proposed according to the lift force distribution laws. The CFD and wind tunnel test results show that the method can precise control the lift force, which may be used to the engineering design of lift force of the HSMT.

Key words: aerodynamic lift force, maglev train, flow control, wind tunnel test

CLC Number:

U238

DING Sansan, YAO Shuanbao, CHEN Dawei. Aerodynamic Lift Force of High-speed Maglev Train[J]. Journal of Mechanical Engineering, 2020, 56(8): 228-234.

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