| Project/Area Number |
21560534
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Hydraulic engineering
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| Research Institution | Tokyo University of Marine Science and Technology |
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Principal Investigator |
OKAYASU Akio 東京海洋大学, 海洋科学部, 教授 (20213994)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMOZONO Takenori 東京海洋大学, 海洋科学部, 助教 (70452042)
MATSUBAYASHI Yuriko 岩手大学, 工学部, 助教 (00586414)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 海岸工学 / 漂砂 / 砕波 / 乱流 / 底質巻き上げ / 水工水理学 |
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| Research Abstract |
A new model of sediment pickup rate accounting for effects of breaking-wave induced turbulence was developed for better predictions of coastal mophodynamics. A series of laboratory experiments were conducted to investigate the relationship between nearbed flow characteristics and sediment pickup under different flow conditions with turbulence supplied from above. New measurement techniques were attempted for quantification of sediment fluxes as well as fluid forces acting on the bed. The experimental results suggested the positive relationship between the turbulence intensities and the pickup rate, from which a new pickup model was formulated.
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