Simulating Electrocapillary effect

Mobi HM Microfluidic device

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I am trying to simulate droplet motion under Electrocapillary Force. I have two electrolytes, one as the droplet and the other as the continuous phase. I tried to couple the TDS and ES physics to form the EDL, but the droplet motion does not occur. Do I need to define surface tension based on the Lippmann equation as well, or is creating the EDL alone sufficient to change the surface tension?I am using a 2D geometry and applying a DC voltage. I have set velocity inlet and pressure outlet as boundary conditions, but at the inlet the velocity is 0​.

I define space charge density in each species as : F_Const( C_cation-C_anion).


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