Aerodynamic Effects of Viaduct-Cutting Connection Section on High-Speed Railway by Wind Tunnel Tests
Publication: Journal of Aerospace Engineering
Volume 32, Issue 5
Abstract
The wind environment and aerodynamic characteristics of vehicles are easily affected by the structural form of the railway. To investigate the aerodynamic effects of viaduct-cutting connection sections on vehicles, models of standard cutting, viaduct, and China Railway Highspeed (CRH2) trains at a scale of 1:20 were tested in wind tunnel tests. The wind speed profiles and vehicle aerodynamic coefficients were developed using a Cobra probe and balance, respectively. Additionally, the effects of wind barriers were applied. The test results indicate that the wind speed profile at the railway juncture is almost independent of the lateral positions at the same position. The aerodynamic influence of vehicles on different tracks (windward and leeward railway tracks) is different. Moreover, wind barriers can change both wind speed profiles and aerodynamic coefficients and significantly reduces wind speed and changes the aerodynamic coefficients to improve vehicle wind-resistant performance.
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Acknowledgments
The authors are grateful for financial support from the National Natural Science Foundations of China (Project Nos. 51525804 and 51708464). Support was also received from the program for the Sichuan Province Youth Science and Technology Innovation Team (Project No. 2015TD0004).
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Published In
Journal of Aerospace Engineering
Volume 32 • Issue 5 • September 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Aug 28, 2018
Accepted: Mar 28, 2019
Published online: Jun 28, 2019
Published in print: Sep 1, 2019
Discussion open until: Nov 28, 2019
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