2009 Fiscal Year Final Research Report
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 |
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| Research Field |
Hydraulic engineering
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| Research Institution | Kyushu University |
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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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| 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 |
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| 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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