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.
Problem with visualizing component of E field - please help
Posted Oct 2, 2012, 3:09 p.m. EDT 3 Replies
Please login with a confirmed email address before reporting spam
Hello,
I have been working to create a model of two conductor plates with a hole through the center. I am interested in the uniformity of the E field between the plates and decided to use a surface plot to show the x component of the E field (Ex) on a 2d cut plane view of my geometry.
My problem is that the color legend shows that there is some E field in the conductor plates near the center hole - of course this is not possible. The problem is worsened when I decrease the range for the color legend.
I have tried meshing more finely, but nothing seems to make a difference. When I plot actual E field lines, there is clearly no E field anywhere inside the plates, so I don't think there is any problem with my model.
Can you please take a look at my screenshots and help me find the problem? I would attach my model, but it is over the allowed file size for attachments.
thank you
i49.tinypic.com/2u76s20.png
i46.tinypic.com/wwn7e8.png
I have been working to create a model of two conductor plates with a hole through the center. I am interested in the uniformity of the E field between the plates and decided to use a surface plot to show the x component of the E field (Ex) on a 2d cut plane view of my geometry.
My problem is that the color legend shows that there is some E field in the conductor plates near the center hole - of course this is not possible. The problem is worsened when I decrease the range for the color legend.
I have tried meshing more finely, but nothing seems to make a difference. When I plot actual E field lines, there is clearly no E field anywhere inside the plates, so I don't think there is any problem with my model.
Can you please take a look at my screenshots and help me find the problem? I would attach my model, but it is over the allowed file size for attachments.
thank you
i49.tinypic.com/2u76s20.png
i46.tinypic.com/wwn7e8.png
3 Replies Last Post Oct 3, 2012, 12:33 p.m. EDT
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Actually, you don't need to solve equations inside of the conductor. Exclude the conductor from the list of domain. Then apply PEC to conductor's boundaries.
What you are seeing now is probably some kind of skin effect which is very real.
What you are seeing now is probably some kind of skin effect which is very real.
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Actually, you don't need to solve equations inside of the conductor. Exclude the conductor from the list of domain. Then apply PEC to conductor's boundaries.
What you are seeing now is probably some kind of skin effect which is very real.
Thank you for the quick reply. Would you mind expanding on what you mean by "excluding the conductor from the list of domain"? What boundary conditions do I need to apply to the conductor boundary?
Thank you for your patience - I'm a student and am very new at this.
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
just follow this example: www.comsol.com/showroom/gallery/8613/
It's well explained there.
It's well explained there.