112 一様流れ中のテーパ円柱から発生する騒音と後流に関する研究(音・振動の実験解析,騒音・振動評価・改善技術)

概要

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The aeolian tones generated from the tapered cylinder were investigated for several inclined angles experimentally. The tapered cylinder was inclined from -40 to 40 degree. It is obtained some interesting results in relating to the aeolian tone and the unsteady flow characteristics. The aeolian tone is large not at the zero angle, but at negative and positive angles. When the side of the large diameter is set downstream at the negative inclined angle, the aeolian tone becomes large compared with the positive angle. The wake vortex generates even at the large inclined conditions. The aeolian tone is fairly low at zero degree compared with the large inclined angle. It is indicated that the aeolian tone is governed not only with the strength of the flow fluctuation in the wake, but also with the position of the rolling up to the wake vortex.
一般社団法人日本機械学会の論文
2006-07-11