The available experimental data focusing on the differences between bubble and drop breakages are still scarce in the literature. This work conducts the experiments of single bubble and single drop breakages in agitated turbulent flows. The effects of fluid particle size and agitation speed on daughter fragment number, breakage time, breakage probability, breakage frequency, and daughter size distribution (DSD) are analyzed. The breakage frequencies of bubble and drop show the monotonic and non‐monotonic variation trends with increasing fluid particle size, respectively. The variations of bubble and drop DSDs exhibit opposite trends, the probability of equal‐sized breakage of bubble increases while that of drop decreases when agitation speed or fluid particle size increases. These different trends cannot be predicted by most of the existing models simultaneously. The processes of elongation and internal flow redistribution during deformation may be the important factors causing these differences.

中文翻译：

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搅拌湍流中气泡与液滴破裂差异的实验研究

文献中关于气泡和液滴破裂之间差异的可用实验数据仍然很少。这项工作进行了搅拌湍流中单个气泡和单个液滴破裂的实验。分析了流体颗粒尺寸和搅拌速度对子体碎片数量、破碎时间、破碎概率、破碎频率和子体尺寸分布（DSD）的影响。气泡和液滴的破裂频率分别随流体粒径的增加呈现单调和非单调变化趋势。气泡和液滴DSD的变化呈现相反的趋势，当搅拌速度或流体粒径增大时，气泡等尺寸破裂的概率增加，而液滴破裂的概率减小。大多数现有模型无法同时预测这些不同的趋势。变形过程中的伸长和内部流动重新分布过程可能是造成这些差异的重要因素。