Formation of Chain Clusters during Bubble Motion from a Single Capillary in an Inclined Pipe
A. E. Gorelikova1,2, O. N. Kashinsky1, A. V. Chinak1
1Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk National Research State University, Novosibirsk, Russia
Keywords: bubbles, inclined channel, bubble velocity, gas velocity
Abstract
The sizes and rise velocity of bubbles in a stationary liquid in an inclined channel with a circular cross-section at various gas flow rates through a capillary were determined (3.0÷5. ml/min). The sizes and velocity of gas bubbles was studied by shadow photography. It is shown that in the range of channel inclination angles 40÷60°, the formation of stable bubble structures-clusters consisting of bubbles of the same size (1.5÷1.8 mm) - can be formed. In modes without the formation of chain clusters, the average diameter of gas bubbles increased (2.0÷2.2 mm) due to their coalescence.
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