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Potential Field in Electro-osmotic Flow
Posted Oct 10, 2025, 5:19 a.m. EDT Electromagnetics, Equation-Based Modeling, Physics Interfaces Version 6.3 0 Replies
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Hi all,
Currently I was trying to reproduce results from a research paper titled from Choi et al. (2011), (attached below). In that paper, two boundary conditions are used at the interface for electric potential. These are (i) potential jump and (ii) simplified gauss law at the interface. Now, while modeling using the 'es' physics in COMSOL, I am not able to see how to model both the conditions at the interface.
I have attached my trial file, in which when I tried putting these conditions at the identity pair, the surface charge condition (gauss law) was getting overridden or fallback-ed due to the potential jump condition. From my understanding, COMSOL isn't letting me put both at the same time. I tried using a coefficient-form PDE to solve it too but it had the same issues with the interface conditions.
What could be a potential fix to this? Is there another way to model the system as given in the paper?
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Hello Abhinandan Jain
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