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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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meshing problems

Posted 2011年6月27日 GMT-4 08:39 Version 4.1 2 Replies

Asghar Joolia
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hello. Can anyone help me meshing this geometry? I can't figure out where exactly the problem is coming from or if there is any error in the way I have defined it. Some help would be very appreciated. I have attached the file.

Thanks
Asghar

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2 Replies Last Post 2011年6月27日 GMT-4 10:43
Lechoslaw Krolikowski
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Posted: 1 decade ago 2011年6月27日 GMT-4 10:28
Hi,
In my opinion inconsistent boundary conditions exist in your model.
Water can't flow from inlet (boundary 10) to outlet (boundary 9) as domains 2 and 3 are separated.
Regards,
Andrzej
Hi, In my opinion inconsistent boundary conditions exist in your model. Water can't flow from inlet (boundary 10) to outlet (boundary 9) as domains 2 and 3 are separated. Regards, Andrzej
Asghar Joolia
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Posted: 1 decade ago 2011年6月27日 GMT-4 10:43
Hey Andrzej,

Thanks for your reply.

I have tried using a block to cut the sharp corners between the two cylinders by using union, so as to make it more blunt and easier for meshing. Then I get no error. This shows that the problem lies on the boundaries where the bigger cylinder and the second larger cylinder meet. This might be too small for meshing. Also I need one of the side to be the inlet and the other the outlet.

Do you have any suggestion how to make it work?

Regards,
Asghar
Hey Andrzej, Thanks for your reply. I have tried using a block to cut the sharp corners between the two cylinders by using union, so as to make it more blunt and easier for meshing. Then I get no error. This shows that the problem lies on the boundaries where the bigger cylinder and the second larger cylinder meet. This might be too small for meshing. Also I need one of the side to be the inlet and the other the outlet. Do you have any suggestion how to make it work? Regards, Asghar

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