噴流の拡散制御に関する研究 : ウェーブレット解析による検討(S22-1 噴流の制御-1,S22 流れ制御の技術)

概要

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The diffusion of the jet issuing from the pipe with the fluttering fins has been studied by using the method of the flow visualization, the PIV, and the wavelet analysis. The velocity distribution of the jet with the fluttering fins has been measured and the jet widths have been obtained, comparing with that without ones. As a result, it has been clarified that the jet with the fluttering fins diffuses largely under the influence of the fins. Furthermore, the velocity fluctuations of these jets with and without fins have been also investigated by using the hot-film sensor and the anemometer. The wavelet analysis on these fluctuations has been conducted. The structure of the jet has been also discussed by using the results of this analysis. As a result, it has been found that there exists the difference of the middle scale structure between the jets with and without fluttering fins.
一般社団法人日本機械学会の論文
2004-09-04