Fundamental Study on Flow Characteristics of Synthetic Jets for Development of Blown Flap
| Project/Area Number |
21560187
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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 |
SATO Kotaro 工学院大学, グローバルエンジニアリング学部, 教授 (80252625)
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| Co-Investigator(Kenkyū-buntansha) |
YOKOTA Kazuhiko 青山学院大学, 理工学部, 教授 (70260635)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 流体機械 / 数値流体力学 / 噴流 / 振動流 / コアンダ効果 / 非定常流れ / ジェット |
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| Research Abstract |
The jet flows have been applied to various fields to control the flow separation. Over the last decade, several studies have investigated synthetic jets. However, there are still many clarifications needed, including details of the structure and Coanda effect of synthetic jets. The present study clarifies some fundamental flow characteristics of free synthetic jets and synthetic jets near a rigid boundary by conducting an experiment and numerical simulations. As the main results, it is found that the velocity distribution of free synthetic jets depends on K=Re/S^2(the ratio of the Reynolds number to the square of the Stokes number) and can be identified by the maximum velocity at the centerline and the jet half-width. Flow visualization is carried out applying the smoke wire method. In addition, it is confirmed that the flow characteristics of the synthetic jet near a rigid boundary and re-attachment length of the synthetic jet are determined not only by H_1/b_0(normalized step heights) but also K.
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Report
(4 results)
Research Products
(32 results)
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[Presentation] 孔開回転円筒の圧力損失特性2012
Author(s)
津野裕太郎, 渡邉匠, 姜東赫, 横田和彦, 佐藤光太郎
Organizer
日本機械学会関東支部第18期総会講演会
Place of Presentation
習志野
Year and Date
2012-03-10
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