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Building a circular ring with Comsol.

Posted Apr 24, 2012, 1:23 a.m. EDT 4 Replies

Marcus Mesentosch
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Hello!

I'm a beginner in using Comsol and I'm trying to build a pipe around a cylinder. I don't know how to solve this problem.
I've already tried to use "Convesion to Solid" but he always fill the whole area. I want to have a gap. I've uploaded a screenshot to make my problem clear.

Attachments:

4 Replies Last Post Apr 24, 2012, 10:24 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Apr 24, 2012, 7:49 a.m. EDT
Hi

in 2D, or 3D check the "Layers" tab in the geometry nodes, and take a look at the corresponding help file ;)

--
Good luck
Ivar
Hi in 2D, or 3D check the "Layers" tab in the geometry nodes, and take a look at the corresponding help file ;) -- Good luck Ivar
Edgar Kaiser
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Posted: 1 decade ago Apr 24, 2012, 9:39 a.m. EDT
Marcus,

build the geometry from outside to inside:

1. Define the outer circle for the pipe
2. Define the inner circle for the pipe
3. Subtract inner from outer
4. Define the cylinder inside the pipe

This should give you the domains you want.

Cheers
Edgar
Marcus, build the geometry from outside to inside: 1. Define the outer circle for the pipe 2. Define the inner circle for the pipe 3. Subtract inner from outer 4. Define the cylinder inside the pipe This should give you the domains you want. Cheers Edgar
Marcus Mesentosch
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Posted: 1 decade ago Apr 24, 2012, 9:57 a.m. EDT

Marcus,

build the geometry from outside to inside:

1. Define the outer circle for the pipe
2. Define the inner circle for the pipe
3. Subtract inner from outer
4. Define the cylinder inside the pipe

This should give you the domains you want.

Cheers
Edgar


Sincerly, this will not build the geometry I want to build as shown on the attached drawing.

@Ivar Kjelberg

There is no "Layers" tab in the geometry node.
[QUOTE] Marcus, build the geometry from outside to inside: 1. Define the outer circle for the pipe 2. Define the inner circle for the pipe 3. Subtract inner from outer 4. Define the cylinder inside the pipe This should give you the domains you want. Cheers Edgar [/QUOTE] Sincerly, this will not build the geometry I want to build as shown on the attached drawing. @Ivar Kjelberg There is no "Layers" tab in the geometry node.
Marcus Mesentosch
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Posted: 1 decade ago Apr 24, 2012, 10:24 a.m. EDT
Excuse me. I've found the layer tab and I could solve the problem. Thank you very much.
Excuse me. I've found the layer tab and I could solve the problem. Thank you very much.

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