2016 Fiscal Year Final Research Report
Elucidation of unsteady aerodynamic forces aimed at reduction of train accidents by tornadoes
| Project/Area Number |
26350491
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Natural disaster / Disaster prevention science
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| Research Institution | Meijo University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
Okura Nobuyuki 名城大学, 理工学部, 准教授 (70367738)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 鉄道 / 竜巻 / 空気力 |
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| Outline of Final Research Achievements |
Aerodynamic forces acting on a train encountering a tornado were studied by an experiment, a theoretical model and a numerical simulation. The results showed as follows. 1) The aerodynamic forces change according to the position of the train in the tornado. 2) The aerodynamic forces acting on intermediate cars can be approximately estimated by using a theoretical model. 3) Assuming that the maximum wind speed is constant irrespective of the core radius, the yawing moment is maximized when the core radius is 0.8 times the train length. 4) When the running route deviates from the tornado center, the aerodynamic forces acting on the train suddenly decrease.
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| Free Research Field |
鉄道の空気力学
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