| Project/Area Number |
25750283
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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 |
Sports science
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| Research Institution | University of Tsukuba |
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Principal Investigator |
HONG Sungchan 筑波大学, スポーツR&Dコア, 研究員 (10638547)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | サッカーボール / スポーツ流体力学 / 空力特性 / サッカー / ボール / 飛翔軌道 / パネル / ブラズーカ / キック動作 |
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| Outline of Final Research Achievements |
In this study, I was used a four high-speed video camera system to investigate the swing motions of knuckle shots. University soccer players capable of kicking the knuckle shot were selected, and the swing motions of their kicking leg were compared as they kicked a knuckle, curve, or straight shot. Thus, in the present study, I found the kicking methods on knuckle shot by analyzing kicking motions and the phase of impact between the kicking foot and ball.
Also, I analyzed the aerodynamic force and frequency that affect the flying knuckle shot kicked by an actual soccer player using high-speed video cameras and considered the unsteady aerodynamic characteristics of the knuckle effect ball. Furthermore, the fluid around the knuckle effect ball in flight was visualized using a smoke agent (titanium tetrachloride), and an attempt was made to clarify the fundamental fluid mechanics expressed by the knuckle ball as well as to analyze the vortex dynamics.
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