2014 Fiscal Year Final Research Report
Study on the supersonic flows inside and outside a micronozzle using LIF and MTV
Project/Area Number |
24560198
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Fluid engineering
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Research Institution | Kyushu University |
Principal Investigator |
HANDA Taro 九州大学, 総合理工学研究科(研究院), 准教授 (30284566)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Keywords | マイクロ流れ / 超音速流れ / 圧縮性流れ / レーザー誘起蛍光法 / 分子タグ法 / マイクロ噴流 |
Outline of Final Research Achievements |
In the present study, the characteristics of supersonic flows in a rectangular micronozzle were investigated using the LIF (Laser-Induced Fluorescence) and MTV (Molecular Tagging Velocimetry) techniques, both of which are a non-intrusive technique for measuring supersonic flows. The results demonstrated that the supersonic core of the jet issuing from the micronozzle is extended remarkably and becomes 60~70 times longer than the nozzle exit height at a certain operating condition. The results also demonstrated that the phenomenon peculiar to supersonic micro flows occur in the micronozzle; that is to say, the density distributions measured in the nozzle cannot be explained by the concept that has been believed.
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Free Research Field |
流体工学
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