Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Integrating part of the boundary
Posted Apr 2, 2012, 4:47 a.m. EDT Interfacing, Geometry Version 4.2 0 Replies
Please login with a confirmed email address before reporting spam
I have a 3d simulation, in which I have a surface, which consists of several boundaries. I want to split that surface into a grid and integrate each element of the grid. The final result should be a matrix in matlab, where each entry in the matrix represents the result of integration of the respective element in the grid.
The way I do it now is by using:
[xo, yo, es] = mphinterp(model, {'x', 'y','es.nD'}, 'dataset','surf1');
F = TriScatteredInterp(xo',yo',es');
Then integrating F.
It works, but gives a large error. I tried to minimise the error by meshing the surface more densely, but the smallest I could get it to was 12%, which is too large for my application.
Is there a way to get the results of the integration straight from Comsol? I was looking at functions like mphint, but couldn't figure out a way how to use them in this way.
I can provide example mph file, if needed.
Best regards,
Ivan
Hello Ivan Ruskin
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.