Discussion Forum

Hello,

I am very new to comsol and still kind of figuring things out. I think for the most part I have figured out how to build models and set the physics. That is the easy part. Most of my questions revolve around post processing.

First off, I have made a joule heating model that seems to be working pretty great, and comsol does a good job at guessing what plots I want to see. But what if, for example, in this case I wanted to see a plot of the current. In one version I just put a voltage on the terminal end and not only do I want to see the temperature, but I am curious what values it is turning up for current. So if a make a new surface plot and try to use Current, comsol doesn't know what that is? But it has to right? In order to obtain the joule heating it has to calculate current, among other variables. How do I see what those values are, and maybe even plot them if I wanted to.

Secondly, I am building a second model just to familiarize myself with how to do something like this because it will be important in future models I have to build. I am essentially building a charge above a grounded plane. Think of the standard method of images scheme. What I want to do is look at the electric field lines, but I am not sure how to make a plot like that. Everything I have tried seems to not work. I suppose it is more then possible I didn't set up the model right, but its a pretty simple configuration so I am mostly confident on that end.

I do have another question, but for the sake of "time" Ill leave that one for now because its not that important.