Discussion Forum

1. Is this a time-domain or frequency-domain model? In a time-domain model, the fields are generally real-valued. In a frequency-domain model, they are complex (to conveniently handle phase) but then you wouldn't normally be plotting fields "against time." Thus, your question is puzzling.
2. I encourage you to post your .mph file to the forum so that others can examine it and offer their suggestions.

the model is time dependent, we wish to extract the field components Hx and Hy and plot them as a function of time.

I have attached the file below

Adam, you attached the .lock file. That is a tiny file that appears in your directory when your .mph file is open. It doesn't contain the model. Ideally, you should close the model file, then attach the .mph file. :)

That should be it below

Your model, at least as you posted it, doesn't have a mesh. And... by saying that, I don't mean that it was simply cleared by choosing "Clear All Meshes." Rather, you don't seem to have specified the mesh at all! Finite element models need meshes. Interestingly, it still executes (sort of) but immediately produces a warning that says "No mesh on domain 1 in the geometry with tag geom1. This may lead to incorrect results." Well, that's putting it rather mildly. So... I encourage you to mesh your problem space properly. Then, you can move on to dealing with some of the other possible problems with the way you've defined your model. But first things first.