Robert Koslover
Certified Consultant
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Posted:
7 months ago
2024年5月12日 GMT-4 13:37
Updated:
7 months ago
2024年5月12日 GMT-4 13:42
Well, one (of many, many) causes of getting zeroes for all your computed variables is failure to specify any non-zero driving signal / source. Most physical systems simply "sit at rest" (so to speak) if there is nothing there to excite them. Eigenfrequency studies may not require you to specify an excitation, but most categories of Comsol models do.
I encourage you to post your .mph file to the forum so that it can be reviewed by others and so the issue(s) in your particular model will be easier to identify.
Also: Can you share what you mean by FRF in your context? The internet lists: "Frequency Response Function," "Fractional radiofrequency," and "Flat Rayleigh Fading," among other possibilities.
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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Well, one (of many, many) causes of getting zeroes for all your computed variables is failure to specify any non-zero driving signal / source. Most physical systems simply "sit at rest" (so to speak) if there is nothing there to excite them. Eigenfrequency studies may not require you to specify an excitation, but most categories of Comsol models do.
I encourage you to post your .mph file to the forum so that it can be reviewed by others and so the issue(s) in your particular model will be easier to identify.
Also: Can you share what you mean by FRF in your context? The internet lists: "Frequency Response Function," "Fractional radiofrequency," and "Flat Rayleigh Fading," among other possibilities.
Acculution ApS
Certified Consultant
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Posted:
7 months ago
2024年5月13日 GMT-4 03:20
As Robert says, you have probably forgotten an input node that drives the system, or forgotten to select a boundary/... in said node.
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René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com
As Robert says, you have probably forgotten an input node that drives the system, or forgotten to select a boundary/... in said node.
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Posted:
7 months ago
2024年5月16日 GMT-4 09:57
Thank you for your responses, the issue has resolved now.
Thank you for your responses, the issue has resolved now.