2015 Fiscal Year Final Research Report
experimental investigation on the negative Magnus force
| Project/Area Number |
25870065
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
Sports science
|
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| Research Institution | Tohoku University |
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Principal Investigator |
|
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| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | 球 / マグヌス力 |
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| Outline of Final Research Achievements |
The Magnus force plays important role in the ball games. There are some reports that this Magnus force tends to become opposite at some Reynolds number. It is called negative Magnus force. To identify the mechanism of this phenomenon, wind tunnel test and flying test was conducted. The region of negative Magnus force is clarified through the wind tunnel test using a table tennis ball. And also it is observed that the negative Magnus force does not appear in the actual flying table tennis ball under the condition of where it appeared on the wind tunnel test. It seems that the deceleration affects the transition phenomena.
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| Free Research Field |
流体力学
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