Issue of taking absolute value of source signal

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Hello I assigned a modulated gaussian pulse to a circle in 2D through electric current density. However, the result when the wave propagates does not show the negative part as if it is in absolute value form. This is verified by a probe result. How to cancel the absolute effect?

Thank you


2 Replies Last Post 2024年8月16日 GMT+2 19:39
Robert Koslover Certified Consultant

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Posted: 2 months ago 2024年7月2日 GMT+2 19:20
Updated: 2 months ago 2024年7月2日 GMT+2 19:20

Any chance you are plotting the norm (i.e., magnitude) of your signal vs. time? In many cases, Comsol's default/suggested plots are of the norms of values of interest. If that's not your problem, then I suggest you post your model to the forum so that people can see what you are actually trying to do.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Any chance you are plotting the norm (i.e., magnitude) of your signal vs. time? In many cases, Comsol's default/suggested plots are of the norms of values of interest. If that's not your problem, then I suggest you post your model to the forum so that people can see what you are actually trying to do.

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Posted: 1 week ago 2024年8月16日 GMT+2 19:39
Updated: 1 week ago 2024年8月16日 GMT+2 19:54

Thank you. It seems COMSOL by default plot normE rather than Ez. Changing normE to Ez solved the problem.

Thank you

Thank you. It seems COMSOL by default plot normE rather than Ez. Changing normE to Ez solved the problem. Thank you

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