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SPH simulations of binary droplet deformation considering the Fowkes theory

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Title: SPH simulations of binary droplet deformation considering the Fowkes theory
Authors: Natsui, Shungo Browse this author →KAKEN DB
Tonya, Kazui Browse this author
Nogami, Hiroshi Browse this author →KAKEN DB
Kikuchi, Tatsuya Browse this author →KAKEN DB
Suzuki, Ryosuke O. Browse this author →KAKEN DB
Keywords: SPH
Binary droplet
Interfacial tension
Fowkes hypothesis
Issue Date: 16-Jan-2021
Publisher: Elsevier
Journal Title: Chemical Engineering Science
Volume: 229
Start Page: 116035
Publisher DOI: 10.1016/j.ces.2020.116035
Abstract: To analyze the complex droplet transient deformation involving two immiscible phases, a practical multi -interfacial tension model has been introduced in the SPH framework. The attraction, which operates on the interface between the different phases is explicitly defined as London dispersion force using the Fowkes theoretical model, and the interfacial tension can be calculated using the sum of the attraction magnitudes corresponding to the surrounding particles. The analytical solution demonstrated good agreement with the simulated results corresponding to the macroscopic multicontact angles and nature of interphase interfacial forces. This simple model is widely applicable to the dynamic analysis of capillary forces involving two or more liquids, and we demonstrated its application to the simulation of the deformation behavior of a binary droplet that contacts a solid. The solid-liquid-liquid contact angle is not sufficient to predict the equilibrium morphology, and the momentum exchange between the two liquids should be considered.
Rights: © [2021]. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 夏井 俊悟

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