縦振動する円筒容器内の液体の非定常圧力応答

概要

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This paper reports experimental studies on the dynamic behavior of a liquid in a cylindrical container subject to verical oscillation with high frequencies. the pressure response, surface wave motion and container wall response induced by vertical vibration are investigated. Measurements have been made of the amplitude of the time-varying pressure was increased exponentially with time when the excitation acceleration exceeded a threshold value. The amplitude of pressure had a maximum at time t_c. The time t_c was decreased as the excitation acceleration increased. It was observed that the variation of the amplitude of free surface motion and the container wall vibration with time showed similar trends with the pressure variation. These facts can be explained by the increase in the void fraction ; the wave velocity of the liquid-bubble-shell system approaches the resonant velocity as the void fraction increases. The time t_c was analyzed by the simple theory. The experimental results of t_c were compared with numerical values and a good agreement was found.
一般社団法人日本機械学会の論文
1987-07-25