Electro‐capillary filling in a microchannel under the influence of magnetic and electric fields

Gorthi, Srinivas R. and Mondal, Pranab K. and Biswas, Gautam and Sahu, Kirti Chandra (2021) Electro‐capillary filling in a microchannel under the influence of magnetic and electric fields. Canadian Journal of Chemical Engineering, 99 (3). pp. 725-741. ISSN 0008-4034

Full text not available from this repository. (Request a copy)


We numerically investigate the dynamics of two immiscible conductive fluids in a narrow fluidic channel under the combined influence of electric and magnetic fields using a diffuse interface based phase-field model. The numerical solver is validated from two different perspectives, viz., with the reported results of microscale multiphase transport as well as the available experimental results in the paradigm of electrically actuated transport. The magnetic field induces the Lorentz force due to its interaction with the electrical forcing, which in turn leads to complex interfacial dynamics and development of a finger-like interface front of the advancing fluid into the receding fluid. Under certain conditions studied in the present work, the trend reverses, and a finger of receding fluid is formed into the advancing fluid. The effect of contrast in fluid properties is studied and the interface breaking phenomenon is observed beyond a threshold viscosity contrast. It is found that for a given viscosity contrast between the fluids, an increase in the strength of the applied magnetic field prevents wetting failure.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Sahu, Kirti Chandrahttp://orcid.org/0000-0002-7357-1141
Item Type: Article
Uncontrolled Keywords: capillary filling,computational fluid dynamics,mathematical modelling,multi phase systems,surface and interfacial chemistry
Subjects: Chemical Engineering
Chemical Engineering > Fluid Mechanics
Chemical Engineering > Cleaning, color, coating, related technologies
Divisions: Department of Chemical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 06 May 2021 07:29
Last Modified: 06 May 2021 07:29
URI: http://raiith.iith.ac.in/id/eprint/7758
Publisher URL: http://doi.org/10.1002/cjce.23876
OA policy: https://v2.sherpa.ac.uk/id/publication/6972
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 7758 Statistics for this ePrint Item