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Cannot evaluate expression

Posted 2022年4月8日 GMT-4 05:53 Electromagnetics, Low-Frequency Electromagnetics Version 5.5 1 Reply

Divya Prakash
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Hi,

I am new to COMSOL and I get the error "Undefined variable. - Variable: mf.LCoil_1 - Global scope Failed to evaluate expression. - Expression: mf.LCoil_1 "

I am using the example : https://www.comsol.com/model/self-inductance-and-mutual-inductance-of-a-single-conductor-and-a-helical-coil-12679 I found on the COMSOL website, it seems fine to assume that variable?

Thanks, Divya

1 Reply Last Post 2022年4月12日 GMT-4 11:00
Mickaël Barsive COMSOL Employee

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Posted: 2 years ago 2022年4月12日 GMT-4 11:00

Hello,

You can check variables using CTRL + SPACE shortcut when entering expression in global evaluation node.

If you are a new COMSOL user, I could suggest you to follow this course about coil modeling: https://www.comsol.com/support/learning-center/article/Modeling-Electromagnetic-Coils-8251/112

If you need further assistance, please contact COMSOL Technical Support here: https://www.comsol.com/support

Best regards,

Mickaël BARSIVE

Hello, You can check variables using CTRL + SPACE shortcut when entering expression in global evaluation node. If you are a new COMSOL user, I could suggest you to follow this course about coil modeling: https://www.comsol.com/support/learning-center/article/Modeling-Electromagnetic-Coils-8251/112 If you need further assistance, please contact COMSOL Technical Support here: https://www.comsol.com/support Best regards, Mickaël BARSIVE

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