模拟简单剪切流中液滴的变形和破裂

IF 2.2 4区 工程技术 Q2 MECHANICS
Saeed Derakhshan, Ata Allah Kamyabi, Ali Mohebbi
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引用次数: 0

摘要

乳状液中液滴的行为对运输现象以及石油和石化工业具有重要意义。在这项研究中,研究了相互靠近的液滴的行为。在两种粘度比(0.5 和 0.9,即液滴与流体的粘度比)和六种毛细管数(0.05、0.11、0.17、0.42、0.28 和 0.36)条件下对这些液滴进行了研究。结果表明了不同体积分数下液滴之间的相互影响。此外,在毛细管数为 0.42、0.82 和 0.36 时,有些体积分数下的液滴会相互粘连,并在结合后破裂。相反,在这些新的毛细管数下,合并后的单滴没有破裂。在毛细管数为 0.84、体积分数为 0.001495 时,液滴没有相互粘连,但在相互影响下破裂。对于每个毛细管数,都达到了指定的体积分数,此时液滴表现为单个液滴。因此,在每个毛细管数中,都可以找到一个体积分数,这样在小于该体积分数时,液滴的行为是单独的,不会相互影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Simulation of drop deformation and breakup in simple shear flow

Simulation of drop deformation and breakup in simple shear flow

The behavior of drops in the emulsion is significant in transport phenomena and the oil and the petrochemical industry. In this study, the behavior of drops that are close to each other was investigated. These drops were studied at two viscosity ratios (0.5 and 0.9, which are the viscosity ratio of drops to fluid) and six capillary numbers (0.05, 0.11, 0.17, 0.42, 0.28, and 0.36). The results demonstrate the effect of drops on each other at a range of volume fractions. Also, at capillary numbers of 0.42, 0.82, and 0.36, there were volume fractions at which drops stuck to each other and broke after combining. In contrast, the single drop at these new capillary numbers after merging was not broken. At the capillary number of 0.84, and volume fraction of 0.001495, the drops did not stick to each other, but they were broken under the influence of each other. For each capillary number, a specified volume fraction was achieved, at which the drops behave as a single drop. Therefore, in each capillary number, a volume fraction can be found so that in volume fractions less than that, drops behave individually and do not interact with each other.

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来源期刊
Korea-Australia Rheology Journal
Korea-Australia Rheology Journal 工程技术-高分子科学
CiteScore
2.80
自引率
0.00%
发文量
28
审稿时长
>12 weeks
期刊介绍: The Korea-Australia Rheology Journal is devoted to fundamental and applied research with immediate or potential value in rheology, covering the science of the deformation and flow of materials. Emphases are placed on experimental and numerical advances in the areas of complex fluids. The journal offers insight into characterization and understanding of technologically important materials with a wide range of practical applications.
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