| Project/Area Number |
23560265
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Oita University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
NISHIDA Eiichi 湘南工科大学, 工学部, 教授 (70410032)
HAYASHI Hidechito 長崎大学, 工学部, 教授 (10173022)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 流体関連振動 / 音響エネルギー / 音響情報・制御 / 振動制御 / 音響共鳴現象 / 渦 / 管群 / フィン / 音響 / 流体関連振動･騒音 / 流体関連振動・騒音 |
|---|
| Research Abstract |
In heat exchangers such as commercially used boilers, acoustic resonance is occasionally generated in ducts when gas flows laterally with respect to the axis of the tubes. We have clarified the characteristics of vortex shedding noise, acoustic damping, and acoustic resonance in two dimensional boiler model. The proposed identified parameter, which means the sensitivity of vortex shedding to acoustic resonance level in the initial resonance region, was verified by using the experimental results.
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