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Problem with structured mesh in GMSH

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Old   July 21, 2021, 11:51
Default Problem with structured mesh in GMSH
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Hi,
I am new in the forum and in GMSH. I don't understand why Gmsh turns my structured mesh into an unstructured one. I attach the file. geo in extension .txt. Thanks in advance for your help.
Regards,
Andrea
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Old   July 21, 2021, 16:22
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Icaro Amorim de Carvalho
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Gmsh requires all surfaces to have at most 4 constituent points/lines to provide a structured mesh. You have to subdivide your geometry in surfaces where you have no more than this number of points/lines.
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Old   July 21, 2021, 16:25
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Besides, you have to recombine all your surfaces. Please check the tutorials from Gmsh. There you can see how to recombine the elements to get a structured mesh. In short, you have to transfinite your surfaces and then recombine. Best of luck.
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Old   July 21, 2021, 17:26
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Quote:
Originally Posted by PenPencil View Post
Besides, you have to recombine all your surfaces. Please check the tutorials from Gmsh. There you can see how to recombine the elements to get a structured mesh. In short, you have to transfinite your surfaces and then recombine. Best of luck.
Thanks for your answer, I try and I will let you know
-Andrea
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Old   July 22, 2021, 09:01
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Quote:
Originally Posted by PenPencil View Post
Besides, you have to recombine all your surfaces. Please check the tutorials from Gmsh. There you can see how to recombine the elements to get a structured mesh. In short, you have to transfinite your surfaces and then recombine. Best of luck.
I can't find the tutorials of Gmsh, have you got any links?
-Andrea
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