CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

electrostatic sources

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 1, 2005, 14:59
Default electrostatic sources
  #1
pi
Guest
 
Posts: n/a
Hi all,

as part of the whole problem, I´m trying to solve the electric field in a box. I set an additional variable and set a Diffusive transport equation and so on.

The problem: Imagine that there is a planar metallic grid in the box (parallel to any face) which is set to a given potential, as the rest of the boundaries (conductors and/or insulators). The problem here is that the grid is inside the domain so what I´m doing is to set a subdomain identical to the box and create a source valued zero everywhere except in the grid. Summarizing, I should solve: div(grad(V))+S=0 where S=rho/epsilon_0 in the grid and S=0 else everywhere

The charge density has to be translated to superficial density (the grid is conductor, sorry)and the mesh has to be fine there at the interface.

The results are like this implementation has not effect and the field is like there is no grid at all, but maybe it is due to a bad guess in the choice of S.

Anyone has solve a similar problem?, or knows if the set up of the problem is right?

thx pi
  Reply With Quote

Old   July 2, 2005, 05:27
Default Re: electrostatic sources
  #2
dd.nvs
Guest
 
Posts: n/a
I believe that there was an article to present on this topic in Avignon in November 2004 (CFX User Meeting Avignon) by the ifremer, enitiia and cetim. Ask cfx

dd.nvs
  Reply With Quote

Old   July 4, 2005, 05:37
Default Re: electrostatic sources
  #3
pi
Guest
 
Posts: n/a
thx. I´ll look.
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Effects of droplets to each other in an electrostatic field alighaffari Fluent UDF and Scheme Programming 4 August 31, 2017 03:22
electrostatic forces between a large numbers of droplets alighaffari FLUENT 5 November 16, 2015 06:18
Modeling the power sources saisanthoshm88 CFX 2 April 6, 2011 19:46
Bacteria sources in simulation Eric Main CFD Forum 1 June 17, 2008 19:49
Point Sources Andrew FLUENT 1 July 19, 2003 04:41


All times are GMT -4. The time now is 09:07.