2009 Fiscal Year Final Research Report
Flow characteristics of drag reducing fluids near the wall surface and turbulent drag reduction mechanism
| Project/Area Number |
20760117
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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 |
Fluid engineering
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
OGATA Satoshi Tokyo Metropolitan University, 理工学研究科, 准教授 (50315751)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 抵抗低減 / 非ニュートン流体 / エバネッセント光 / 速度分布 |
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| Research Abstract |
The velocity profile of dilute polymer solutions and a distilled water near the wall surface in a microchannel was clarified using a particle tracking velocimetry technique combined with evanescent wave illumination. The results obtained for the velocity profile of a distilled water using fluorescent particles with a diameter of 20 nm was found that the resolution of the velocity profile near the wall surface was drastically improved from the conventional result. On the other hand, the velocity profile of dilute polymer solutions increased significantly compared with that of distilled water, and the gradient of the velocity profile increases with the increase of the molecular weight.
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Research Products
(12 results)
