Menu

Discussion Forum

New Discussion
Filtra

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 The information provided may be out of date.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.

Current Density Plot with EC physics

Posted 14 nov 2012, 10:56 GMT-5 Low-Frequency Electromagnetics, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization Version 4.3 1 Reply

Steven Prince
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello,

I'm very new to comsol and was wondering if one is able to plot the electric current between two plates through a liquid (conductive) solution. I've been looking at the busbar example and see that in order to get the surface current plotted, the example adds a 3D Plot Group->adds a Surface-> Replaces the expression with the Electric Currents>current density norm (jh.normJ).

My question is: Is this same expression available when I'm using an EC stationary study?

Thanks!
1 Reply Last Post 14 nov 2012, 14:40 GMT-5
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 14 nov 2012, 14:40 GMT-5
Hi

the EC solves for V such that your conducting media has some current passing, but COMSOL will give you the current "density" so you need to define a spatial direction and length (an edge, or a Data Set Cut line) to get the current flow, to get the total current along a direction you need to integrate over some area (perpendicular to your edge / line)

--
Good luck
Ivar
Hi the EC solves for V such that your conducting media has some current passing, but COMSOL will give you the current "density" so you need to define a spatial direction and length (an edge, or a Data Set Cut line) to get the current flow, to get the total current along a direction you need to integrate over some area (perpendicular to your edge / line) -- Good luck Ivar

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