A multiphase model for exploring electrochemical Marangoni flow

Ebrahim Karimi Sibaki; Alexander Vakhrushev; Anastasiia Kadylnykova; Menghuai Wu; Andreas Ludwig; Jan Bohacek; Abdellah Kharicha

doi:10.1016/j.elecom.2023.107567

A multiphase model for exploring electrochemical Marangoni flow

Ebrahim Karimi Sibaki, Alexander Vakhrushev, Anastasiia Kadylnykova, Menghuai Wu, Andreas Ludwig, Jan Bohacek, Abdellah Kharicha

Chair of Simulation and Modelling of Metallurgical Processes (310)

Research output: Contribution to journal › Article › Research › peer-review

Abstract

A multiphase numerical model based on the volume of fluid (VOF) method is proposed to simulate the transient, electrochemically-generated Marangoni flow in a system comprising a NaOH electrolyte and a eutectic gallium–indium (EGaIn) metal droplet. The model incorporates appropriate equations to accurately represent the transport phenomena, including flow, electric potential, and electric current density, within the entire system. The model includes the transient variation in the interfacial tension as a function of electric current density at the interface, leading to the generation of Marangoni flow and enabling the tracking of droplet shape evolution. Notably, the model successfully captures the elongation of the droplet towards the cathode, which is validated through comparison with available experimental data.

Original language	English
Article number	107567
Number of pages	6
Journal	Electrochemistry Communications
Volume	155.2023
Issue number	October
DOIs	https://doi.org/10.1016/j.elecom.2023.107567
Publication status	Published - 1 Sept 2023

Keywords

multiphase model
Marangoni flow
Volume of fluid (VOF)
Electro-Marangoni flow
Eutectic gallium indium alloy (EGaIn)
Droplet elongation
Interfacial tension modulation

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Cite this

@article{0f022c63f93f4a0295aa40bc2718140c,

title = "A multiphase model for exploring electrochemical Marangoni flow",

abstract = "A multiphase numerical model based on the volume of fluid (VOF) method is proposed to simulate the transient, electrochemically-generated Marangoni flow in a system comprising a NaOH electrolyte and a eutectic gallium–indium (EGaIn) metal droplet. The model incorporates appropriate equations to accurately represent the transport phenomena, including flow, electric potential, and electric current density, within the entire system. The model includes the transient variation in the interfacial tension as a function of electric current density at the interface, leading to the generation of Marangoni flow and enabling the tracking of droplet shape evolution. Notably, the model successfully captures the elongation of the droplet towards the cathode, which is validated through comparison with available experimental data.",

keywords = "multiphase model, Marangoni flow, Volume of fluid (VOF), Electro-Marangoni flow, Eutectic gallium indium alloy (EGaIn), Droplet elongation, Interfacial tension modulation",

author = "{Karimi Sibaki}, Ebrahim and Alexander Vakhrushev and Anastasiia Kadylnykova and Menghuai Wu and Andreas Ludwig and Jan Bohacek and Abdellah Kharicha",

year = "2023",

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doi = "10.1016/j.elecom.2023.107567",

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T1 - A multiphase model for exploring electrochemical Marangoni flow

AU - Karimi Sibaki, Ebrahim

AU - Vakhrushev, Alexander

AU - Kadylnykova, Anastasiia

AU - Wu, Menghuai

AU - Ludwig, Andreas

AU - Bohacek, Jan

AU - Kharicha, Abdellah

PY - 2023/9/1

Y1 - 2023/9/1

N2 - A multiphase numerical model based on the volume of fluid (VOF) method is proposed to simulate the transient, electrochemically-generated Marangoni flow in a system comprising a NaOH electrolyte and a eutectic gallium–indium (EGaIn) metal droplet. The model incorporates appropriate equations to accurately represent the transport phenomena, including flow, electric potential, and electric current density, within the entire system. The model includes the transient variation in the interfacial tension as a function of electric current density at the interface, leading to the generation of Marangoni flow and enabling the tracking of droplet shape evolution. Notably, the model successfully captures the elongation of the droplet towards the cathode, which is validated through comparison with available experimental data.

AB - A multiphase numerical model based on the volume of fluid (VOF) method is proposed to simulate the transient, electrochemically-generated Marangoni flow in a system comprising a NaOH electrolyte and a eutectic gallium–indium (EGaIn) metal droplet. The model incorporates appropriate equations to accurately represent the transport phenomena, including flow, electric potential, and electric current density, within the entire system. The model includes the transient variation in the interfacial tension as a function of electric current density at the interface, leading to the generation of Marangoni flow and enabling the tracking of droplet shape evolution. Notably, the model successfully captures the elongation of the droplet towards the cathode, which is validated through comparison with available experimental data.

KW - multiphase model

KW - Marangoni flow

KW - Volume of fluid (VOF)

KW - Electro-Marangoni flow

KW - Eutectic gallium indium alloy (EGaIn)

KW - Droplet elongation

KW - Interfacial tension modulation

U2 - 10.1016/j.elecom.2023.107567

DO - 10.1016/j.elecom.2023.107567

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JF - Electrochemistry Communications

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