Elmer Discussion Forum

Hi Pavel, could you solve this problem? I'm trying to solve a simple problem like yours, only two electrodes almost perfect conductors over and under a cubic body almost perfect dielectric, I would like to know the electric field inside the body and I thimk that I'm not correctly setting up the boun...

Irrespective of the solver used I believe that the problem relies on boundary conditions. This case solves the A/V fields in isolating bodies (4 & 5), which contains the surfaces settled as stimulus (3 & 4) but nothing (or zero) is computed inside the phantom (body 1). Maybe sif file needs s...

Thank you anyway Matthias, does any other user have experience on this solvers?

Hi Matthias, thanks for your reply. In fact, the whole top and bottom faces of the cube are not covered by the antennas (isolating and metallic layers). So I defined a surface between the border of the face to the border of the antennas (surface 200) , that's it, a square with a round hole in it. Th...

Dear Elmer users, I'm posting this question for my problem but I think that could be a general question about the way that boundary conditions should be used. schema.png A I said in other post ( http://elmerfem.org/forum/viewtopic.php?f=3&t=4142&sid=34086856b6565563940fef70e3a5e4b3 ) I'm try...

Thank you again Peter, I've tried it just using boundary conditions with my time depentent signal and no body force, this leads to trivial solution. Any clue? The only data I have is this signal. EDIT: I've just tried the transient solution without preconditioning and It converges, I'll try to study...

Thanks Peter. Your answer rises some doubts to me: - The potential supplied by me is time dependent, by now, for simplicity, is just a sine signal but in the future it will be something different (periodic too), is this solved by the steady state mode? - As far as I've read in the model's manual the...

Dear Elmer users, I'm trying to solve an easy problem, I'm trying to compute the electric field in an agar cube caused by a dynamic potential on part of the bottom and top faces. I have computed the internal current using StatCurrentSolver and used it as body force for WhitneyAVSolver, the A and V f...

Thank you for your kind replies, Matthias and Peter. I'll try to solve this issue using your advices.

Hi dear Elmer users, As I wrote in a previous post I'm trying to compute the SAR ( measured as W/kg) delivered by an electric field to a phantom. The field is generated by two antennas that work together as a capacitor. The way I'm trying to solve the problem is computing the volume current (using S...