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 The information provided may be out of date.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.
Delta-integration from physic mathematic
Posted Jan 11, 2011, 11:44 a.m. EST Version 4.1 1 Reply
Please login with a confirmed email address before reporting spam
Hi all,
I need to post-process an integration containing a 3d-delta function...The integration that I have to perform is written :
int_{dom(2)}F(x,y,z)*delta(x-x_0)*delta(y-y_0)dxdydz (1)
where the volumic-integration is performed inside a geometric complexe object (dom(2)).
I use the application weak form and the integration coupling variable to solve the previous integration...Unfortunately, I do not know what are the right parameters to type in the comsol-GUI in the "boundary settings" (weak ? dweak ?). The example that I found in the comsol's guide (to solve Poisson's equation for a delta source) does not work in the previous problem.
Have you some solutions to perform this integration with comsol ? What are the different steps to write (1) in comsol ?
Thank you for your help
Marc Vanderbeck
I need to post-process an integration containing a 3d-delta function...The integration that I have to perform is written :
int_{dom(2)}F(x,y,z)*delta(x-x_0)*delta(y-y_0)dxdydz (1)
where the volumic-integration is performed inside a geometric complexe object (dom(2)).
I use the application weak form and the integration coupling variable to solve the previous integration...Unfortunately, I do not know what are the right parameters to type in the comsol-GUI in the "boundary settings" (weak ? dweak ?). The example that I found in the comsol's guide (to solve Poisson's equation for a delta source) does not work in the previous problem.
Have you some solutions to perform this integration with comsol ? What are the different steps to write (1) in comsol ?
Thank you for your help
Marc Vanderbeck
1 Reply Last Post Jan 11, 2011, 1:38 p.m. EST
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
No one ?