Numerical Simulating Effects of Rain-loaded Wind on the Aerodynamic Characteristics and Running Stability of High-speed Trains

doi:10.7522/j.issn.1000-694X.2015.00112

JOURNAL OF DESERT RESEARCH ›› 2016, Vol. 36 ›› Issue (4): 943-950.DOI: 10.7522/j.issn.1000-694X.2015.00112

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Numerical Simulating Effects of Rain-loaded Wind on the Aerodynamic Characteristics and Running Stability of High-speed Trains

Yue Yufei¹, Zeng Qiulan², Li Zhenshan^1,2, Lu Fuan³

1. Ministry of Education Key laboratory of Water and Sediment Sciences/Department of Environmental Engineering, Peking University, Beijing 100871, China;
2. School of Environment and Energy, Peking University, Shenzhen 518055, Guangdong, China;
3. School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received:2015-03-11 Revised:2015-04-16 Online:2016-07-20 Published:2016-07-20

Abstract

Abstract: Effects of rain-loaded wind on the aerodynamic characteristics and running stability of a high-speed train were studied by numerical experiments in three dimensions using commercial CFD software (FLUENT). The variation in aerodynamic forces and rolling moment of the high-speed train were detected at different yaw angles with/without rain intensities. The results show that the rainfall increases the drag force, side force and rolling moment of the train, which makes its performance worse and running stability degraded. Under the conditions of simulated rain intensities and yaws, the coefficients of drag force increased by 1.8%-38.6% and 0.1%-9.16%, respectively, meaning a rise of power energy consumption of the train. The coefficient of rolling moment has a rise of 1.8%-10.0%, indicating a decrease of running stability of the train, if compared with that under only-cross-wind condition.

Key words: rain-loaded wind, numerical simulation, Eulerian two-phase model, high-speed train, aerodynamic characteristics

CLC Number:

X169

Yue Yufei, Zeng Qiulan, Li Zhenshan, Lu Fuan. Numerical Simulating Effects of Rain-loaded Wind on the Aerodynamic Characteristics and Running Stability of High-speed Trains[J]. JOURNAL OF DESERT RESEARCH, 2016, 36(4): 943-950.

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Numerical Simulating Effects of Rain-loaded Wind on the Aerodynamic Characteristics and Running Stability of High-speed Trains

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