二次元垂直噴流による矩形容器内での気液界面振動〔流体工学, 流体機械〕

概要

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An experimental investigation of the free surface oscillation induced by upward two dimensional jet in a rectangular tank is presented. Various dynamic behaviors of "sloshing" and "jet-flatter" are observed by using a high-speed video camera. The influence of the jet velocity, tank size or jet location on the fundamental oscillating characteristics of the free surface is discussed based on the measured frequency and amplitude of the free surface oscillation. The region of oscillation onset is shown as a map in water level versus jet velocity plane under a wide range of condition. The frequency of jet-flatter normalized by the natural frequency of the corresponding mode depends on the aspect ratio of the rectangular tank. Furthermore, the free surface oscillations under sloshing are compared with numerical calculations using the finite differential method.
社団法人日本機械学会の論文
1998-04-25