| Project/Area Number |
20560222
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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 |
Dynamics/Control
|
|---|
| Research Institution | Oita University |
|---|
Principal Investigator |
HAMAKAWA Hiromitsu Oita University, 工学部, 准教授 (30243893)
|
|---|
| 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)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
|---|
| Keywords | 音響エネルギー / 流体関連振動・騒音 / 音響共鳴現象 / 渦 / 管群 / フィン / 音響 |
|---|
| Research Abstract |
In heat exchangers such as commercially used boilers, acoustic resonant noise 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, acoustic damping, acoustic resonance, feedback effect and vortex shedding synchronization in two dimensional boiler model. The new modeling method of vortex shedding synchronization was proposed.
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