凝聚动力学

IF 25.4 1区工程技术 Q1 MECHANICS

Annual Review of Fluid Mechanics Pub Date : 2024-07-26 DOI:10.1146/annurev-fluid-121021-044919

Jens Eggers, James E. Sprittles, Jacco H. Snoeijer

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引用次数: 0

摘要

两液滴合并是自由表面流动中发生的基本拓扑转变之一。对它的描述有很多应用，例如，在化学工业（乳化、喷雾等）中，在驱动气候的自然流动中，以及在材料烧结中。两个液滴重新连接后，强烈的局部表面张力会驱动奇异的流动，其特点是连接液桥根据缩放定律增长。我们回顾了不同参数和外层流体存在时两个球形液滴凝聚的理论、实验和模拟。然后，我们将其推广到其他几何形状，如在基底上扩散的液滴和 Hele-Shaw 流动中的液滴，并讨论了粘性流动以外的其他类型的质量传输。我们的重点是重新连接后的时间，以及相对于彼此静止的最初未变形液滴的极限。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Coalescence Dynamics

The merging of two fluid drops is one of the fundamental topological transitions occurring in free surface flow. Its description has many applications, for example, in the chemical industry (emulsions, sprays, etc.), in natural flows driving our climate, and for the sintering of materials. After the reconnection of two drops, strongly localized surface tension forces drive a singular flow, characterized by a connecting liquid bridge that grows according to scaling laws. We review theory, experiment, and simulation of the coalescence of two spherical drops for different parameters and in the presence of an outer fluid. We then generalize to other geometries, such as drops spreading on a substrate and in Hele–Shaw flow, and we discuss other types of mass transport, apart from viscous flow. Our focus is on times immediately after reconnection and on the limit of initially undeformed drops at rest relative to one another.

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来源期刊

Annual Review of Fluid Mechanics 物理-力学

CiteScore

54.00

自引率

0.40%

发文量

期刊介绍： The Annual Review of Fluid Mechanics is a longstanding publication dating back to 1969 that explores noteworthy advancements in the field of fluid mechanics. Its comprehensive coverage includes various topics such as the historical and foundational aspects of fluid mechanics, non-newtonian fluids and rheology, both incompressible and compressible fluids, plasma flow, flow stability, multi-phase flows, heat and species transport, fluid flow control, combustion, turbulence, shock waves, and explosions. Recently, an important development has occurred for this journal. It has transitioned from a gated access model to an open access platform through Annual Reviews' innovative Subscribe to Open program. Consequently, all articles published in the current volume are now freely accessible to the public under a Creative Commons Attribution (CC BY) license. This new approach not only ensures broader dissemination of research in fluid mechanics but also fosters a more inclusive and collaborative scientific community.