壁面スライド気泡群中に観察される気泡間相互作用 : 第1報,気泡間相互作用パターンのPTVによる計測(流体工学,流体機械)

概要

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The bubble-bubble interaction in a swarm of wall-sliding bubbles is experimentally investigated using an image processing measurement. At first, the drag coefficient of a vertically sliding bubble is measured for the range of Reynolds number from 2 to 9. Secondly, the two-dimensional pattern of the bubble-bubble interaction in a layer of wall sliding bubbles is detected by using particle tracking velocimetry (PTV). The evolution of relative coordinates and the relative velocity vectors of the bubbles are clarified by the statistical data analysis. Also, hydrodynamic mechanism of the bubble-bubble interaction is discussed with the present data comparing literatures on twin bubble interactions.
一般社団法人日本機械学会の論文
2002-04-25