| Project/Area Number |
08650214
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Saga University |
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Principal Investigator |
SETOGUCHI Toshiaki Saga University, Departoment of Mechanical Engineering, Professor, 理工学部, 教授 (90145186)
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| Co-Investigator(Kenkyū-buntansha) |
NAKANO Toshihiro Saga University, Departoment of Mechanical Engineering, Assistant, 理工学部, 助手 (50039260)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1996: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | Nonequilibrium condensation / Condensation shock / Compressible flow / Shock wave / Boundary layr / Separation / Pressure fluctuation / Flow control / 湿り空気 / 超音速流れ / 液滴 |
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| Research Abstract |
The effects of condensation produced by the expansion of moist air in a supersonic nozzle and in transonic nozzle with circular bump model on the flow fields with shock wave were investigated experimentally and numerically. As a result, it is found that in case with condensation, the turbulence and boundary layr thickness behind shock waves become small in comparison with without condensation. Furthermore, condensation influences strongly the position of the shock wave relative to the shock wave relative to the condensation zone and there are three patterns for the relation between the location of the nonequilibrium condensation zone and shock waves for different initial degrees of supersaturation. These facts means that the nonequibrium condensation is an effective method to suppress the shock-induced separation.
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