2024-03-29T12:15:25Z
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2022-12-15T03:36:49Z
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エッジトーン現象のアクティブ制御と制御機構に関する基礎研究
エッジトーン現象のアクティブ制御と制御機構に関する基礎研究
Basic Study on Active Control of Edge Tone and Control Mechanism
藤沢, 延行
河野, 隆志
高野, 剛
日本機械学会
本文データは学会の許諾に基づくCiNiiからの複製である
Flow Control
Active Control
Unsteady Flow
Edge Tone
Flow Visualization
The performance of active feedback control of edge tone phenomenon by the control flow is investigated experimentally and the mechanism is discussed. It is found that the pressure fluctuations over the edge surface are reduced by this control roughly to those of the free jet. The optimum conditions for the phase lag and amplitude of the control flow are obtained quantitatively for various edge distances from the jet nozzle. These results show that the present control technique is very effective for weakening the flow oscillation of the jet-edge system. The flow visualization study suggests that the control mechanism is due to the cancellation of pressure fluctuations created at the edge by the imposed velocity fluctuations.
日本機械学会
2000-08
jpn
journal article
http://hdl.handle.net/10191/5765
https://niigata-u.repo.nii.ac.jp/records/3707
http://ci.nii.ac.jp/naid/110002403265
AN00187441
03875016
日本機械学会論文集. B編
日本機械学会論文集. B編
66
648
2073
2078
https://niigata-u.repo.nii.ac.jp/record/3707/files/9_0063.pdf
application/pdf
648.6 kB
2019-07-30