A comprehensive theoretical and experimental study is made of free surface sloshing in a vertically oscillating cylindrical container at high frequency with emphasis placed upon the dynamics of the gas-liquid interface. The formation of liquid drops ejected from the free surface, gas entrainment in the liquid, and bubble motions are studied experimentally. It is found that the input acceleration required for surface disintegration is dominated by the liquid depth, and that the scales and the trajectory heights of the drops are dominated by the types of surface disintegration mechanisms achieved. An analysis is made of the gas entrainment caused by impacts of the drops upon the free surface. The behavior of the gas-liquid interface during the impacts and bubble formation are analyzed numerically. Theories for the vertical motions of the pulsating bubbles and their mutual attractive motions are also developed. Theoretical results agree approximately with the experimental results. Bubble motions in vertically vibrating liquid columns could be estimated quantitatively by the numerical results. (DePo)
Surface disintegration and bubble formation in vertically vibrated liquid column
Oberflaechenstoerung und Blaeschenbildung in senkrecht oszillierenden Fluessigkeitssaeulen in Raumfahrzeugen
AIAA Journal ; 18 , 4 ; 442-449
1980
8 Seiten, 15 Bilder, 20 Quellen
Article (Journal)
English