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Variable Names in Equation View

Posted Jun 18, 2014, 11:55 a.m. EDT Semiconductor Devices Version 4.4 3 Replies

Shivam Sarodia
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I'm trying to modify equations in the Semiconductor interface to suit my needs. I've enabled Equation View, so I can see what's going on under the hood.

There's some variables, however, which are used, but I can't find the definitions of. For example, I see semi.Jn_postx and semi.Jn_posty being used in the "Expression" column, but I can't find their definitions anywhere. Where are they, so I can add an extra term to the equation?
3 Replies Last Post Apr 28, 2022, 11:29 a.m. EDT
Pu Zhang
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Posted: 10 years ago Jun 18, 2014, 12:51 p.m. EDT
There's no such table. The only things you have are the PDE, its weakform and relations among the variables. You need to "guess" which is which.
There's no such table. The only things you have are the PDE, its weakform and relations among the variables. You need to "guess" which is which.
Shivam Sarodia
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Posted: 10 years ago Jun 18, 2014, 1:10 p.m. EDT
Thanks for your reply.

I'm not completely sure I understand, however. These variables must be calculated somewhere (if I'm not mistaken), but they don't appear in the weak expressions or variable tables.
Thanks for your reply. I'm not completely sure I understand, however. These variables must be calculated somewhere (if I'm not mistaken), but they don't appear in the weak expressions or variable tables.
Jeff Hiller COMSOL Employee

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Posted: 2 years ago Apr 28, 2022, 11:29 a.m. EDT
Updated: 2 years ago Apr 28, 2022, 3:17 p.m. EDT

Hello Shivam,

After you turn on Equation View, there are nodes labeled "Equation View" attached to many nodes in the model tree. It sounds like you are simply looking in the Equation View for the "wrong" node. Use Ctrl+F to search the model for the node where the expression is defined. For each variable, there's also a Description field that explains what it corresponds to.

Best,

Jeff

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Jeff Hiller
Hello Shivam, After you turn on Equation View, there are nodes labeled "Equation View" attached to many nodes in the model tree. It sounds like you are simply looking in the Equation View for the "wrong" node. Use Ctrl+F to search the model for the node where the expression is defined. For each variable, there's also a Description field that explains what it corresponds to. Best, Jeff

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