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Numbering of the boundaries in MATLAB

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Hi
My problem isn't (I don't think) specific to electrochemistry but I will explain it in case it helps:
I am dong different simulations in electrochemistry which involve me moving a probe over a surface that contains insulating or generating islands, in order to image these islands.
I have found that the numbering of the different faces (in 3D) and edges( in 2D) changes depending on the position of the probe relative to the island. This is a problem as I am running the simulations with MATLAB, changing the coordinates at every step to image the entire surface.
Is there anyway of "locking" the numbers of boundaries to avoid having to change the conditions for all the different cases? Changing the boundary conditions with the automatic boundary numbering change was relatively easily done in two dimensions but seems complicated and a long process in 3D.
Has anybody had this problem? How did you deal with it?
Thanks for your help.

1 Reply Last Post Sep 18, 2009, 10:06 a.m. EDT

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Posted: 2 decades ago Sep 18, 2009, 10:06 a.m. EDT
Hi,
I think you can use the "geomanalyze" function which allows to decompose the "new" geometry" and to update boundary conditions. You can look an example into the comsol guide under comsol\command.

I hope this can be helpful!

Let me know any news

Good luck

Pasquale
Hi, I think you can use the "geomanalyze" function which allows to decompose the "new" geometry" and to update boundary conditions. You can look an example into the comsol guide under comsol\command. I hope this can be helpful! Let me know any news Good luck Pasquale

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