Parameterization for turbulence induced flocculation of SPM based on directly-measured turbulent energy dissipation rate in coastal region
Project/Area Number |
20760333
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Single-year Grants |
Research Field |
Hydraulic engineering
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Research Institution | Kyushu University |
Principal Investigator |
SAITA Tomonori Kyushu University, 大学院・工学研究院, 学術研究員 (80432863)
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Project Period (FY) |
2008 – 2009
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Project Status |
Completed (Fiscal Year 2009)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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Keywords | 懸濁物質輸送 / フロキュレーション / フロック径 / 沈降速度 / 乱流構造 / 乱流エネルギー散逸率 / 潮流 / 有明海 / 乱流微細構造 |
Research Abstract |
In this study, a field observation on a relation between turbulent kinetic energy dissipation rates ε and floc size was carried out in Ariake Bay by using a microstructure profiler and a waterproof microscope. As a result of the observation, ε at flood and ebb tide were higher than that at slack tide. On the other hand, the observed floc diameters were around 10-15μm and had not changed drastically for a tidal period. In addition, floc diameters estimated by the model proposed by Winterwerp (2002) roughly corresponded to the observed values.
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Report
(3 results)
Research Products
(4 results)