Open HenryWHR opened 3 weeks ago
Update: Although I still don't know what is wrong with the previous code, the problem is partly solved now by removing the following lines from the code:
for s in co_elec:
plc.createNode(s, marker=-99)
The electrodes should really be added to have accurate results and they need to be inside of the modelling domain. Maybe this is a tolerance problem.
Often, the electrodes are not quite points but spheres or cylinders and it makes sense to put them a little bit (the dimension of the electrode) inside, i.e. using r_container-dx
for the sin/cos terms. Maybe this helps.
Thanks! The forward modelling is clear to me and it works well by inserting the electrodes into the mesh. r_container-dx
helps.
When it comes to inversion, do you have any suggestions on how to set up the mesh? If I use the same idea, perhaps it's too fine for inversion grids around the electrodes.
Hello,
I am trying to simulate ERT measurements on a cylinder with two rings of electrodes. Based on the example '3D modelling in a closed geometry', I built the code below. However, it (the meshing) doesn't work unless I remove the nodes at electrode position.
If I remove the nodes at the electrode position, but keep nodes inserted 1 mm for refinement and consider these nodes as electrodes, the meshing and modelling can work.
I feel like the electrodes on the boundary are not in the domain of the cylinder, but I don't know why and how to solve this. Could you please have a look and help?
Many thanks!
Best regards Henry