[CFD_Newbie_Multiphase]

Originally Posted by XinXin

Hello，everyone. I am simulating a water droplet impact surface under electrical field based on the interFoamEHD solver which designed by ivook.My model is 2D-Axisymmetric. I find that the charge density distribution is weird, there is some charge appearing above the droplet along the axis. I am puzzled by this problem. The charge density distribution is related to the velocity Magnitude.

I think the charge conversation equation is calculated for all computation field,both water and air in the interFoam solver. However, for water, it will get polarized and ohmic migration of charged ions. For air,it can be regarded as a perfect dielectric, there is no charge convection. I think we should use different physical model for water and air. But can it be realized in interfoam. I am comfused by the interfoam solver. How does this sovler distinguish the phase1 and phase2? I am reading the twoPhaseMixture.H, incompressibleTwoPhaseMiture.H ,but still get stuck.Could you please give me some advices?
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Hi,XinXin,I also had a problem with the charge density distribution, how did you handle it?

[gsam]

The model given on this website has added Maxwell's electrical force equation in both peqn and ueqn files. I'm not that familiar with how interfoam solves Navier stokes equation. Is it the right approach to do? Could someone please confirm it? I do not see those equations used in some solvers uploaded here. If some one can tell me how it works, it will be much helpful.