Lateral aerodynamic performance of 600 km/h high-speed maglev train during open line intersection

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (1) : 137-146.

YANG Yonggang1, CHEN Dawei2, MEI Yuangui1

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Abstract

The lateral aerodynamic performance of Chinese 600kmh-1 high-speed maglev train when crossing in open line was analyzed based on three dimensional, unsteady, compressible, RANS equation, SST turbulence model and Overset mesh technique. The characteristics of the train’s pressure change were displayed, the change law of the lateral aerodynamic force, yaw and roll moments were revealed, the reasons for the lateral swing and rolling of the carriages were analyzed and the influence of train velocity on lateral aerodynamic performance was discussed. The results indicated that the passing train’s pressure distribution determines the change law of the lateral aerodynamic force for observation train. The lateral aerodynamic performance of the leading car is worst and trailing car’ is worse. The meeting sides’ pressure played a decisive role in the lateral force, yaw and roll moment’s fluctuations in each carriage. The peaks of the pressure wave and lateral force are approximately proportional to the square of the train speed. The streamline zones’ pressure was analyzed, which provides a reference for the local aerodynamic optimization design.

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High-speed maglev train / Crossing in open line / Lateral aerodynamic performances / Train velocity / Three-dimensional numerical simulation

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YANG Yonggang1, CHEN Dawei2, MEI Yuangui1. Lateral aerodynamic performance of 600 km/h high-speed maglev train during open line intersection[J]. Journal of Vibration and Shock, 2022, 41(1): 137-146

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