Menu

Discussion Forum

New Discussion
Filtrer

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 The information provided may be out of date.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.

Variables in "Equation View"

Posted 14 déc. 2011, 08:20 UTC−5 Plasma Physics Version 4.0a, Version 4.1, Version 4.2 0 Replies

Vladimir Karalnik
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Are the equations and expressions listed in "Equation View" are a kind of documentation, or Comsol really use them in calculations?

For example (argon_dbd_1d model):
Diffusive flux vector for Ar+ species is defined as (in section "Species: Ar+"->"Equation View"):
dc.jx_wAr_1p =
-dc.rho*dc.wAr_1p*dc.z_wAr_1p*dc.um_wAr_1p*d(dc.V,x)

But in "Plasma Model 1" -> "Equation View" the same variable is defined as:
dc.jx_wAr_1p =
-dc.rho*dc.Dm_wAr_1p*d(dc.wAr_1p,x) -dc.rho*dc.wAr_1p*dc.Dm_wAr_1p*d(dc.Mn,x)/dc.Mn -dc.Tflux_x_wAr_1p

The 1st expression is electroforetic flux, the 2d seemed to be correct.
Wich equation are used for calculation? Can I obtain the full set of such equations?

Why Weak Expressions for Ar+ don't include electroforetic flux?

0 Replies Last Post 14 déc. 2011, 08:20 UTC−5
COMSOL Moderator

Hello Vladimir Karalnik

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.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content