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PML for time-dependent solver in SME doesn't work at all.

Posted Jul 10, 2011, 6:18 a.m. EDT Version 4.0a 2 Replies

Heungson Lee
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I am dealing with an elastic wave (solid wave ) problem with COMSOL V40a..

But PML for time-dependent solver in SME in my model doesn't work, thus I searched a lot here

and found that many people have the same difficulties and no clear answers.

When I used V35a, there were no PML for time-dependent solver in SME, thus I didn't bother.

It seems that no one knows how to correctly make this work or only the software developer knows the answer.

Then why put PML into V40a in the first place?

Could anyone give me a simple example with working PML for time-dependent solver in SME?

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2 Replies Last Post Jul 25, 2017, 6:40 p.m. EDT
COMSOL Moderator

Hello Heungson Lee

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

昆 唐
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Posted: 7 years ago Jul 25, 2017, 4:35 a.m. EDT
Hi, Heungson

Did you solve the problem?
I met the same question again.
Hi, Heungson Did you solve the problem? I met the same question again.
Henrik Sönnerlind COMSOL Employee

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Posted: 7 years ago Jul 25, 2017, 6:40 p.m. EDT
Hi,

PMLs are for frequency domain only.

For time dependent analysis, you can use the Low Reflecting Boundary to damp wave reflections.

Regards,
Henrik

Hi, PMLs are for frequency domain only. For time dependent analysis, you can use the Low Reflecting Boundary to damp wave reflections. Regards, Henrik

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