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CLC number: U271.91

On-line Access: 2011-12-01

Received: 2011-09-23

Revision Accepted: 2011-09-23

Crosschecked: 2011-09-26

Cited: 3

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.12 P.979-984


Influence of aerodynamic braking on the pressure wave of a crossing high-speed train

Author(s):  Meng-ling Wu, Yang-yong Zhu, Chun Tian, Wei-wei Fei

Affiliation(s):  Research Institute of Railway & Urban Mass Transit, Tongji University, Shanghai 200092, China

Corresponding email(s):   wuml_sh@163.com

Key Words:  Aerodynamic braking, High-speed train, Crossing air pressure

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Meng-ling Wu, Yang-yong Zhu, Chun Tian, Wei-wei Fei. Influence of aerodynamic braking on the pressure wave of a crossing high-speed train[J]. Journal of Zhejiang University Science A, 2011, 12(12): 979-984.

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T1 - Influence of aerodynamic braking on the pressure wave of a crossing high-speed train
A1 - Meng-ling Wu
A1 - Yang-yong Zhu
A1 - Chun Tian
A1 - Wei-wei Fei
J0 - Journal of Zhejiang University Science A
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DOI - 10.1631/jzus.A11GT011

When aerodynamic braking works, the braking wings can change the flow field around the train, which may impact on the comfort and safety. Based on a sliding mesh, the pressure wave and flow field around high-speed trains with aerodynamic braking are analyzed. By comparing three typical intersection situations, the pressure wave of a high-speed train during braking (with or without aerodynamic braking) is studied. The analyses indicate that the pressure wave around the high-speed train body will change while using the aerodynamic braking, causing several pressure pulses on the surface of crossing high-speed trains. The distances between the pressure pulses are equal to the longitudinal distances of the brake wings, but the magnitudes of the fluctuations are less than those induced by the head of crossing trains. During the crossing, a train without aerodynamic braking will not impact the crossing train.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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