| Project/Area Number |
13650194
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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 | Kogakuin University |
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Principal Investigator |
MIZUNO Akisato Kogakuin University, Faculty of Engineering, Professor, 工学部, 教授 (80133320)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Kotaro Kogakuin University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (80252625)
SAIKA Takashi Kogakuin University, Faculty of Engineering, Professor, 工学部, 教授 (20146731)
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| Project Period (FY) |
2001 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2003: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2002: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | Tunnel Ventilation / Jet / Duct Flow / Pressure Gain / Turbulent Mixing / Traffic / 運動量 / 昇圧力 / 模型実験 / 速度分布 / 安全 / 運動量保存則 |
|---|
| Research Abstract |
In order to know the flow field and pressure gain characteristics with an inclined jet injection into a tunnel duct with rectangular cross section, we have performed a model experiment with a 1/30 scale. A series of experiment gave results on the flow field by the jet, in view of pressure characteristics and velocity profile, depending on the shape of guide vanes. Stress was laid on the experimental cases for the "flat type" vanes, which is considered to be important from practical aspects. The most favorable guide vane type for a 30 degree approaching jet was the one with the flat plate with the length equal to the jet width, and same parallel length. In addition numerical simulation for the model was carried out using a commercial code. Numerical results showed good agreement with the experimental results. As conclusion, we have found the most favorable shape of jet injection nozzle in view of pressure gain and tunnel safety.
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