2012 Fiscal Year Final Research Report
Clarification of Vortex Formations and Velocity Fluctuations in Rivers by Detailed Measurement and Their Applications
| Project/Area Number |
22560510
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Hydraulic engineering
|
|---|
| Research Institution | Gifu University |
|---|
Principal Investigator |
FUJITA Yuichiro 岐阜大学, 流域圏科学研究センター, 教授 (90027285)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MIZUKAMI Seiei 岐阜大学, 工学部, 技術専門員 (90377698)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Keywords | 水理学 / 河川水理学 / 乱流現象 / 自然現象観測 / ADCP / 水難事故 |
|---|
| Research Abstract |
At a river bend known as a danger spot of water accidents where small to large sized vortices appear complicatedly, moving observations and fixed point observations were carried out in parallel with an acoustic Doppler type of 3D velocity meter and those of current profilers. Additional experiments also were conducted. As the results, very sharp changes in riverbed topography are shown minutely and flows are clarified as plunge into deep part, well up along wall-like riverbed hump and plunge into again. Spatial-temporal scales and frequency properties of velocity fluctuations and changes in current directions are evaluated.
|
