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Problem with 3D PDE thin layer mesh

Posted 07.02.2013, 12:46 GMT-5 Mesh Version 4.2a 2 Replies

Zhaoyang Zhong
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Hi everyone

I encountered a problem with meshing a thin layer(~10e-6m) with 3D PDE model. I am not sure how to mesh such thin layer. Has anyone managed to mesh a similar case?

Looking forward to your reply.
2 Replies Last Post 11.02.2013, 08:32 GMT-5
Fabrice Schlegel COMSOL Employee

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Posted: 1 decade ago 08.02.2013, 09:01 GMT-5

Dear Zhaoyang,

If this thin layer is orders of magnitude smaller than your geometry reference length, I would recommend replacing it by a boundary condition or a boundary PDE. A thin wall in a 3D flow simulation could be replaced by a 2 dimensional “interior wall” for instance. This will greatly reduce the computational load.

Alternatively, you can also use a structured mesh to discretize your thin domain. For more information on structured mesh, please refer to this video tutorial: www.comsol.com/video/267/ .

Best,
Fabrice
Dear Zhaoyang, If this thin layer is orders of magnitude smaller than your geometry reference length, I would recommend replacing it by a boundary condition or a boundary PDE. A thin wall in a 3D flow simulation could be replaced by a 2 dimensional “interior wall” for instance. This will greatly reduce the computational load. Alternatively, you can also use a structured mesh to discretize your thin domain. For more information on structured mesh, please refer to this video tutorial: http://www.comsol.com/video/267/ . Best, Fabrice
Zhaoyang Zhong
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Posted: 1 decade ago 11.02.2013, 08:32 GMT-5
Thank you for your reply. I will have a try.
Thank you for your reply. I will have a try.

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