首页|颗粒击穿气泡时气泡的变形和破裂

颗粒击穿气泡时气泡的变形和破裂

Deformation and Bursting of Bubbles When Particles Break Through Bubbles

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通过高速摄像机拍摄研究了颗粒击穿半球气泡破碎的演变过程.观察并分析了气泡成型后边缘再生和对流情况、受到颗粒击穿时气泡破碎的概率、以及成孔后的气泡破碎行为.通过量纲分析以及实验研究发现,气泡破碎概率是雷诺数和韦伯数的函数,概率P=1.08(Re0.5We0.25)0.664,且当Re0.5We0.25>1020时,概率升至100%,气泡破碎形成的不稳定性射流数量是奥内佐格数Oh的函数.气泡液膜的卷曲速度随溶液浓度提高而升高,气泡液厚度随浓度提高而减小.
The evolution of the particle-induced hemispherical bubble bursting process is invistigated using high-speed camera filming. The edge regeneration and convection after bubble formation,the probability of bubble bursting when subjected to particle penetration,and the bubble bursting behavior after hole formation are observed and analyzed. Through dimensional analysis and experimental research,it is found that the probability of bubble breaking probability is a function of Reynolds number and Weber number. The probability is givenby P=1.08 (Re0. 5We0. 25)0. 664,and the probability is reaches to 100% when Re0. 5We0. 25>1020. The number of ligaments formed by bubble bursting is a function of the Oh number. The rim receding velocity of the bubble liquid film increases with the concentration of the solution increases and the film thickness decreases with the concentration increases.

bubble marginal regenerationbubble liquid film thicknessbubble burstingthe rim receding velocity of bubble liquid filmfilm droplets

王飞、杨泽、陈进、苏志坚

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东北大学 材料电磁过程教育部重点实验室,辽宁 沈阳 110819

辽宁红沿河核电有限公司,辽宁 大连 116000

气泡边缘再生 气泡液膜厚度 气泡破裂 气泡液膜边缘收缩速度 膜液滴

2024

东北大学学报(自然科学版)
东北大学

东北大学学报(自然科学版)

CSTPCD北大核心
影响因子:0.507
ISSN:1005-3026
年,卷(期):2024.45(6)