2024-03-29T01:04:40Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00003707
2022-12-15T03:36:49Z
423:424:425
453:454
Basic Study on Active Control of Edge Tone and Control Mechanism
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
藤沢, 延行
44816
河野, 隆志
44817
高野, 剛
44818
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.
journal article
日本機械学会
2000-08
application/pdf
日本機械学会論文集. B編
648
66
2073
2078
日本機械学会論文集. B編
AN00187441
03875016
https://niigata-u.repo.nii.ac.jp/record/3707/files/9_0063.pdf
jpn
http://ci.nii.ac.jp/naid/110002403265
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