Hello all,
I am attempting to model the time varying current distributions on 2 rectangular electrodes with with tabs. The model idea is that current flows into one electrode through its tab, then flows perpendicularly across a separator and into the other electrode and out its tab. The rest of the electrodes are electrically insulated except for the top tab boundary, where I define the current in (as a Terminal).
My sticking point is how to model this perpendicular (ionic) current in COMSOL. The equation governing this ionic current will be of the form J = (1/R)*(V_electrode1 - V_electrode2); essentially the ionic current is driven by the voltage difference between each electrode. I guess it boils down to the electrodes represented as a 2D network of resistors, each connected at a node by another resistor controlling the ionic current, forming a 3D matrix of resistors.
I am confused as how to specify this ionic current. Would it be represented as a current source on the face of each electrode? I assume i would also need two Electric Current modules, one for each electrode, so that I can solve for the voltage on each one.
I feel like this is a basic problem, but I must be missing something fundamental. I appreciate any input!
Ben
I am attempting to model the time varying current distributions on 2 rectangular electrodes with with tabs. The model idea is that current flows into one electrode through its tab, then flows perpendicularly across a separator and into the other electrode and out its tab. The rest of the electrodes are electrically insulated except for the top tab boundary, where I define the current in (as a Terminal).
My sticking point is how to model this perpendicular (ionic) current in COMSOL. The equation governing this ionic current will be of the form J = (1/R)*(V_electrode1 - V_electrode2); essentially the ionic current is driven by the voltage difference between each electrode. I guess it boils down to the electrodes represented as a 2D network of resistors, each connected at a node by another resistor controlling the ionic current, forming a 3D matrix of resistors.
I am confused as how to specify this ionic current. Would it be represented as a current source on the face of each electrode? I assume i would also need two Electric Current modules, one for each electrode, so that I can solve for the voltage on each one.
I feel like this is a basic problem, but I must be missing something fundamental. I appreciate any input!
Ben