@Robert Wool-house

I'm using ANSYS Workbench and in another words, because of voltage potential between two electrodes, the air will ionize and charged particles would move, other researchers used COMSOL by using Electrostatic Field Module and Dilute Transfer Module to show the motion of charged particles in the gap as illustrated in attached picture, how to start with ANSYS Workbench to do this simulation? which modules on ANSYS to start with?