Low Reynolds number limit of turbulent states in channel flow
| Project/Area Number |
19760123
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Fluid engineering
|
|---|
| Research Institution | Kansai University |
|---|
Principal Investigator |
ITANO Tomoaki Kansai University, システム理工学部, 准教授 (30335187)
|
|---|
| Project Period (FY) |
2007 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥3,800,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥600,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000)
|
|---|
| Keywords | 壁乱流 / 渦構造 / レイノルズ数 / 秩序構造 / 低レイノルズ数 / 分岐解析 |
|---|
| Research Abstract |
By means of both of the bifurcation theory and the direct numerical simulation method complementarily, which have been employed independently to investigate turbulent flows, we explore non-trivial equilibrium flows in infinite parallel plates at low Reynolds numbers. The key result obtained in this project is the discovery of the hairpin vortex state of the plane Couette flow. While hairpin-vortices have been identified as a time-dependent coherent structure in experiments of turbulent shear flows, any corresponding exact solution has never been solved.
|
Report
(4 results)
Research Products
(29 results)
