Deformation and Bursting of Bubbles When Particles Break Through Bubbles

doi:10.12068/j.issn.1005-3026.2024.06.007

Abstract

Abstract:

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 given by $? P = 1.08 ? R e 0.5 W e 0.25 0.664$ ， and the probability is reaches to 100% when $R e 0.5 W e 0.25$ >1 020. 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.

Key words: bubble marginal regeneration, bubble liquid film thickness, bubble bursting, the rim receding velocity of bubble liquid film, film droplets

CLC Number:

O 351.2

Fei WANG, Ze YANG, Jin CHEN, Zhi-jian SU. Deformation and Bursting of Bubbles When Particles Break Through Bubbles[J]. Journal of Northeastern University(Natural Science), 2024, 45(6): 808-815.

Figures/Tables 14

Fig.1 Experimental equipment

Table 1 Experimental solution codes and physical parameters

溶液代号	水∶丙二醇∶十二烷基硫酸钠	密度/（kg·m^-3）	黏度/（mPa·s）	表面张力/（N·m^-1）
N_33	322∶10∶1	1 008.3	1.092	0.044 93
N_50	211∶10∶1	1 012.5	1.165	0.042 89
N_100	100∶10∶1	1 025.0	1.323	0.040 85

Table 2 Experimental scheme

溶液代号	颗粒直径	气泡直径	颗粒直径/气泡直径	颗粒下落高度/mm（颗粒撞击速度/（m·s^-1））
溶液代号	mm	mm	颗粒直径/气泡直径	颗粒下落高度/mm（颗粒撞击速度/（m·s^-1））
N_33/50/100	6	34	0.176	200（1.98）/400（2.8）
N_33/50/100	8	34	0.235	200（1.98）/400（2.8）
N_33/50/100	10	34	0.294	200（1.98）/400（2.8）

Fig.2 Liquid film shrinkage speed processing flow

Fig.3 Values of the expansion edge of the liquid film hole during bubble bursting

Fig.4 Bubble drainage stage

Fig.5 Variation of edge retraction velocity with time after bubble bursting of N_33 solution

Fig.6 Comparison of bursting and non?bursting situation

Fig.7 Variation of bursting probability with Reynolds number and Weber number

Fig.8 First frame bursting velocity versus Ornezog number

Fig.9 Average steady?state liquid film retraction velocity

Fig.10 Thickness was calculated using the Taylor-Culick formula

Fig.11 Variation with time after bubble bursting

Fig.12 Oh versus number of jets

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