2016 Fiscal Year Final Research Report
A study on transient aerodynamics of a 3D bluff body caused by a sudden event
| Project/Area Number |
26420115
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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 |
Fluid engineering
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 応用空気力学 / 過渡空気力 / 非定常空気力 / ３次元ブラフボディ / 渦構造 / 自動車空力 / 空力微係数法 |
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| Outline of Final Research Achievements |
In this study, aerodynamics of a three-dimensional bluff body moving in a ground effect has been studied, especially focusing on transitional aerodynamic characteristics induced by a sudden event. Based on the important flow structures around an automobile, two groups of bluff bodies, which can reproduce a typical wake structure or pillar vortices, have been investigated. Lane-change maneuver, transitional change of relative wind direction, and free damped vibration in pitching motion were considered as target conditions for the sudden event. Transitional aerodynamic force acting on the bluff bodies in each condition have been investigated and flow structures that cause difference of the transitional aerodynamics have been clarified.
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| Free Research Field |
流体工学
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