Abstract
A liquid bath contained in a cylindrical vessel is strongly agitated by a swirl motion of a liquid jet. This phenomenon is beneficial for the enhancement of the reaction efficiency of metals refining processes as well as wastewater treatment. The condition for the occurrence of the swirl motion was determined based on water model experiments as a function of the aspect ratio of the bath and a modified Rossby number. The physical properties of liquid hardly affected the occurrence of the swirl motion under the present experimental conditions. Empirical equations were proposed for predicting the occurrence of the swirl motion.
