Hi
I had a very quick look at your model, I notice that you use a "thick" infinite element, quite close to the wires, I suspet this is disturbing your Lorentz force calculations.
I get better results if I have more "air" around the wires and have only a thin (I tried th=0.05m) infinite element at the outside of your 1m radius "currently infinite element " circle. Still they are different from the theory but only some 10-15%, I beleive one should try with an even greater air surrounding.
the difference in the maxwell tensor, is for me a meshing artefact, have a look at my simple model in the ModelExchange:
www.comsol.com/community/exchange/71/
the virtual displacements [correction work] is propbably a better approach
there are several nice examples in the AC/DC documentation and the model library
Good luck
Ivar
I had a very quick look at your model, I notice that you use a "thick" infinite element, quite close to the wires, I suspet this is disturbing your Lorentz force calculations.
I get better results if I have more "air" around the wires and have only a thin (I tried th=0.05m) infinite element at the outside of your 1m radius "currently infinite element " circle. Still they are different from the theory but only some 10-15%, I beleive one should try with an even greater air surrounding.
the difference in the maxwell tensor, is for me a meshing artefact, have a look at my simple model in the ModelExchange:
www.comsol.com/community/exchange/71/
the virtual displacements [correction work] is propbably a better approach
there are several nice examples in the AC/DC documentation and the model library
Good luck
Ivar
