2011 Fiscal Year Final Research Report
Investigation of Mixing Enhancement Mechanism Caused by Pseudo-Shock Wave
| Project/Area Number |
20360081
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
MASUYA Goro 東北大学, 大学院・工学研究科, 教授 (20271869)
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| Co-Investigator(Kenkyū-buntansha) |
TAKITA Kenichi 東北大学, 大学院・工学研究科, 准教授 (80282101)
KOUCHI Toshinori 東北大学, 大学院・工学研究科, 助教 (40415922)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 圧縮・非圧縮流 / 擬似衝撃波 / 乱流混合 / レーザー計測 / Large Eddy Simulation |
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| Research Abstract |
Mixing of fuel injected into supersonic internal flow with a pseudo-shock wave, which appears in the combustor of a dual-mode ramjet engine, is significantly and non-isotropically improved. In order to clarify the mechanism of this mixing enhancement, injectant concentration and velocity distributions were measured using a particle image velocimetry (PIV)and a planar laser-induced fluorescence (PLIF), respectively. In addition, numerical simulations were carried out to understand the flowfield. As a result, we found that the pseudo-shock wave produced strong turbulence near the wall and it enhanced mixing of the jet.
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