| Project/Area Number |
23760164
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Fluid engineering
|
|---|
| Research Institution | Kansai University |
|---|
Principal Investigator |
ITANO Tomoaki 関西大学, システム理工学部, 准教授 (30335187)
|
|---|
| Project Period (FY) |
2011 – 2012
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
|
|---|
| Keywords | 精密濾過 / 乱流遷移 / 剪断流 / 乱流 / 平面クエット流 / 膜分離 / 混層流 / クロスフロー |
|---|
| Research Abstract |
Filtration technologies such as clean air and water treatment is indispensable to sustaing our modern life. The main mechanism underlying these technologies is that suspended particles are separated from suspension by filteration through a membrane with fine pores. However, the permeability gradually decreases due to an increase in pressure loss caused by an accumulated layer of suspended material, "cake", on the membrane, which is a key problem on the technology.
As one of solutions for the problem, the cross-flow filtration method, where suspension in turbulent state is swept to the parallel to the menbrane, can effectively reduces the thickness of cake in the filtration process. The present work elucidates that the turbulent state can be induced via the laminar-turbulent transition via a small perturbation with spanwise vortices.
|
