Parameterization for turbulence induced flocculation of SPM based on directly-measured turbulent energy dissipation rate in coastal region

Research Project

Project/Area Number	20760333
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Hydraulic engineering
Research Institution	Kyushu University
Principal Investigator	SAITA Tomonori Kyushu University, 大学院・工学研究院, 学術研究員 (80432863)
Project Period (FY)	2008 – 2009
Project Status	Completed (Fiscal Year 2009)
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)
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.

Report

(3 results)