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Error Acoustic Diffusion equation

Posted Jun 22, 2020, 10:25 p.m. EDT Acoustics & Vibrations 2 Replies

Carlos Galeano
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Hi everyone, I am using COMSOL - Acoustic Diffusion interface with room coupling intenal BC. I found this error:

Undefined variable. - Variable: comp1.ade.room5.h

I am looking for "h" room variable but i can't find information about it. Someone can give me some tips about this type error, or about this "h" variable.

Thanks in advance.

Carlos G.

2 Replies Last Post Jun 25, 2020, 10:52 a.m. EDT
Alexis Prel
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Posted: 4 years ago Jun 24, 2020, 6:30 a.m. EDT

Hi Carlos,

Have you tried searching for this variable in your model ?

You can do Ctrl + F then type h . This might give you too many hits, so try with room5.h

Hi Carlos, Have you tried searching for this variable in your model ? You can do `Ctrl + F` then type `h` . This might give you too many hits, so try with `room5.h`
Mads Herring Jensen COMSOL Employee

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Posted: 4 years ago Jun 25, 2020, 10:52 a.m. EDT
Updated: 4 years ago Jun 25, 2020, 11:30 a.m. EDT

Hi Carlos

You need to apply the wall conditon (sub-feature to the room) also on the boundary where you apply the room coupling. Wall features have to be applied to all boundaries in a room.

Best regards Mads

Hi Carlos You need to apply the wall conditon (sub-feature to the room) also on the boundary where you apply the room coupling. Wall features have to be applied to all boundaries in a room. Best regards Mads

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