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Journal article
A Numerical Approach for Simulating a High-Speed Train Passing through a Tornado-Like Vortex
Journal of applied fluid mechanics, v 13(5), pp 1635-1648
01 Sep 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Tornados are one of the most common natural disasters, but their occurrence can be sudden and unpredictable. For trains operating in the areas where tornadoes frequently happen, the operation safety is challenged. Tornado generator was recently proposed as a method of numerical investigation of tornado-like vortex flows. This paper presents a numerical approach for the simulation of train passing through a tornado-like vortex on realistic scale. It is found that the tornado-like vortex causes appearance of localized regions of a negative pressure on the train and transient variations of the aerodynamic loads acting on the train. As a result, the tornado-like vortex causes swings on the lateral force, and subsequently on the rolling moment, which affect the passenger comfort and operation safety of the train. The method presented herein can be further applied to the study of train behavior and real time response while encountering tornadoes of different types and strength, which is significant for evaluating the operation safety of high-speed trains.
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Details
- Title
- A Numerical Approach for Simulating a High-Speed Train Passing through a Tornado-Like Vortex
- Creators
- R. Z. Xu - Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Hunan, Peoples R ChinaF. Wu - Joint Int Res Lab Key Technol Rail Traff Safety, Changsha 410075, Hunan, Peoples R ChinaW. H. Su - Natl & Local Joint Engn Res Ctr Safety Technol Ra, Changsha 410075, Hunan, Peoples R ChinaJ. F. Ding - Univ Waterloo, Dept Appl Math, Waterloo, ON N2L 3G1, CanadaD. Vainchtein - Drexel University
- Publication Details
- Journal of applied fluid mechanics, v 13(5), pp 1635-1648
- Publisher
- Isfahan Univ Technology
- Number of pages
- 14
- Grant note
- 11702331 / National Natural Science Fund of China; National Natural Science Foundation of China (NSFC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- C. and J. Nyheim Plasma Institute
- Web of Science ID
- WOS:000561845200023
- Scopus ID
- 2-s2.0-85086567589
- Other Identifier
- 991019168539704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Mechanics
- Thermodynamics