角型タンク内の天井部における圧力

概要

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This paper discribes the dynamic pressures caused by the liquid motion in partially filled moving model tank. Through the experiments, the pressure at the tank top, the velocity when the water surface collided with the tank top and the degrees of angle θ made between the water surface and the tank top were measured. Since the measured pressures are greatly affected by the degrees of angle, the pressures are thereafter replaced by K, which is defined as the pressure coefficient P=KV^2/2g, which represents the magnitude of the impulsive pressure. At the angle θ less than 15°the value of K is large, while K takes on small value when exceeds 20°. At larger excitation amplitudes, where the sloshing phenomena becomes more violent, the rising velocity of the water surface increases. As the result of the increase, extremely high impact pressures are hard to occur on the tank top due to foam contained in the water.
社団法人日本航海学会の論文
1981-01-15