液面衝突上向き平面噴流自励振動-ジェットフラッタの振動機構 : 第2報, 振動系の構成とエネルギー供給機構〔流体工学, 流体機械〕

概要

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Jet-flutter is a transverse oscillation of a submerged upward plane water jet impinging directly on a free surface. The movement of the impingement point results in additional fluid mass being left on the surface, which does not balance with the momentum supplied by the jet. The imbalance results in generation of progressing waves and of a surface level gap at the impingement point. The level gap is restored not by the waves progressing laterally but by the vertical motion of the water column. The above model explains well the following two major characteristics of jet-flutter : the frequency corresponds to that of water column oscillation in a partitioned tank with the same water depth, and the oscillation region has a wide range above a certain velocity limit determined by the water depth.
一般社団法人日本機械学会の論文
1997-08-25