Hi, I've been trying to model a grounding system submitted to a current impulse on time domain. I can simulate that situation employing the Electric Currents physics from AC/DC module. However, that physics disregards magnetic effects. Next, I studied the Magnetic fields interfaces, but in this case I found difficults on modelling current direction, as the current must be assigned into a coil. In the Magnetic and Electric Fields physics, it is possible to define terminals for electric current input and output. But in this case, it seems not possible to perform time dependent simulations, as the 'time dependent' is regarded as a 'custom study', and it is said that this study must be settled up manually.
Anyone knows how can I model this problem on COMSOL? Is it possible to employ FFT to connect time inputs and outputs to a frequency domain study? Can Magnetic and Electric fields physics be ajusted for a time dependent study?