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首页> 外文期刊>Journal of industrial and engineering chemistry >Bubble formation in a step-emulsification microdevice: hydrodynamic effects in the cavity
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Bubble formation in a step-emulsification microdevice: hydrodynamic effects in the cavity

机译：阶梯乳化微量化中的气泡形成：腔中的流体动力学效应

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This study focuses on the generation of bubbles in a step-emulsification microdevice via a two-angle photography method. It's found that the bubble generation mechanism is controlled by the interfacial tension, below a critical capillary number; while controlled by viscous force, inertial force and the disturbance induced by the bubble swarm, above the critical capillary number. From the two-angle photography method, a model is established for predicting the bubble size, by taking into account of the dynamic contact angle between gas-liquid interface and wall, and the hydrodynamic feedback of the cavity on bubble formation via the quantification of resistance by the volume fraction of gas in the cavity. (c) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：本研究的重点是通过双角度摄影法在分步乳化微装置中产生气泡。研究发现，气泡生成机理受界面张力控制，低于临界毛细管数；受粘性力、惯性力和气泡群引起的扰动控制时，超过临界毛细管数。从双角度摄影法出发，考虑气液界面与壁面的动态接触角，以及空腔对气泡形成的流体动力反馈，通过空腔中气体的体积分数量化阻力，建立了预测气泡尺寸的模型。（c） 2020年，韩国工业和工程化学学会。由爱思唯尔B.V.出版。版权所有。

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