気液並流・向流・十字流における単一ノズルでの気泡形成

概要

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The bubble formation in cocurrent, countercurrent and crosscurrent flow under the condition of constant gas flow rate is considered theoretically.<BR>Relationships predicting the volume of bubbles generated are proposed. Under a variety of physical properties of liquid, the relationships are compared with measurements taken with three kinds of nozzles of 0.111, 0.169 and 0.303 cm diameter and stream velocities up to 40 cm/s, while the stream velocities in countercurrent flow were up to 15 cm/s. The proposed model for bubble formation in moving streams is in good agreement with measurements. The bubble volume formed in both cocurrent and crosscurrent flow decreases with increasing stream velocity while the bubble volume formed in countercurrent flow increases. The smallest bubble volume is obtained under crosscurrent flow. Empirical equations of the correction factors involved in the theoretical development for each of the three flows are given.
社団法人化学工学会の論文