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.

Electroneutrality in Nernst-Planck (Crevice Corrosion)

Please login with a confirmed email address before reporting spam

Hello,

I am trying to verify my concentration gradient along my crevice by plotting the electroneutrality (EN) of the species versus the crevice position.

However, I cannot find a place to add the equation for EN manually and then generate a 1D plot. Does anyone have any suggestions? I cannot even find a tutorial video that will help.

Thanks, Lins



1 Reply Last Post 15 nov. 2017, 07:14 UTC−5

Please login with a confirmed email address before reporting spam

Posted: 7 years ago 15 nov. 2017, 07:14 UTC−5

Hi

Are you using Nernst-Planck physics? In that one of the species is bound via the electroneutrality condition, i.e. it is not calculated at all. Of course you can make a Line Graph and plot the sum z_i*c_i along any line you define. You may either define the sum as a variable of its own or just write it in the variable definition box.

BR Lasse

Hi Are you using Nernst-Planck physics? In that one of the species is bound via the electroneutrality condition, i.e. it is not calculated at all. Of course you can make a Line Graph and plot the sum z_i*c_i along any line you define. You may either define the sum as a variable of its own or just write it in the variable definition box. BR Lasse

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.