Re: [Help] AC electroosmosis, defining the electrode-electrolyte boundary condition

Dear Tom,

Thanks for your reference :)

I tried to write the boundary conditions according to the paper that i mentioned (Loucaides et al. 2007).
My solution does not converge, and the unconverged results vary on different runs.
My guess could be that I didnt write the boundary conditions correctly on the electrodes.

Below are the BC that i used:

Conductive DC Media (dc)
BC: Inward Current Flow
Electrode1: Jn = -(zeta-Vpp)/Zdl
Electrode2: Jn = -(zeta+Vpp)/Zdl
where Zdl = 1/i*2*pi*f*Cdl (its in complex form)

Incompressible Naiver-Stokes (mmglf)
BC: Inflow/Outflow velocity
Electrode1: u = -eo*er*A*(zeta-Vpp)*Ex_dc/eta
Electrode2: u = -eo*er*A*(zeta+Vpp)*Ex_dc/eta

Refer to the attached document for the schematics/equations.
I look forward to any suggestions and comments, many thanks in advance.

Best Regards,
yang