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Different geometry of mesh would affect the value of E field
Posted Jun 21, 2016, 10:35 p.m. EDT RF & Microwave Engineering, Mesh Version 5.2 1 Reply
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Hello,
I simulated the EM wave propagating in the air medium recently. And I found a strange phenomenon that the different geometry of mesh may affect the value of electrical field.
In my model, the EM wave is propagating along the -z direction and the electrical field is in the y direction. The top and bottom surface of model is set as port and the power is 1 W. The boundary condition of model is set as PEC and PMC. As I know, only y component of E field can exist in the model. The x and z component of E field would be zero or very small. After testing, I found that the different geometry of mesh would affect the value of electrical field.
If the geometry of mesh is cubic, the value of y component E field is much larger than x and z component (about 1E11 times). But if the geometry of mesh is free tetrahedral, the value of y component E field is close to the x and z component (about 1E4 times).
I'm confused that why the different geometry of mesh would affect the value of electrical field. I think that it doesn't make sense.
Hope someone can help me. Any reply will be useful to me.
Thanks.
Shih-Yi
I simulated the EM wave propagating in the air medium recently. And I found a strange phenomenon that the different geometry of mesh may affect the value of electrical field.
In my model, the EM wave is propagating along the -z direction and the electrical field is in the y direction. The top and bottom surface of model is set as port and the power is 1 W. The boundary condition of model is set as PEC and PMC. As I know, only y component of E field can exist in the model. The x and z component of E field would be zero or very small. After testing, I found that the different geometry of mesh would affect the value of electrical field.
If the geometry of mesh is cubic, the value of y component E field is much larger than x and z component (about 1E11 times). But if the geometry of mesh is free tetrahedral, the value of y component E field is close to the x and z component (about 1E4 times).
I'm confused that why the different geometry of mesh would affect the value of electrical field. I think that it doesn't make sense.
Hope someone can help me. Any reply will be useful to me.
Thanks.
Shih-Yi
Attachments:
1 Reply Last Post Jun 21, 2016, 10:42 p.m. EDT
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Posted:
8 years ago
Here is the .mph file of my simulation.
I'm sorry that the file is too big to attach. So I upload them to the Dropbox.
E field_cubic mesh.mph
www.dropbox.com/s/z25d94b46ej60vm/E%20field_cubic%20mesh.mph?dl=0
E field_tetrahedral mesh.mph
www.dropbox.com/s/tq7pufyn1wgs7s4/E%20field_tetrahedral%20mesh.mph?dl=0
I'm sorry that the file is too big to attach. So I upload them to the Dropbox.
E field_cubic mesh.mph
www.dropbox.com/s/z25d94b46ej60vm/E%20field_cubic%20mesh.mph?dl=0
E field_tetrahedral mesh.mph
www.dropbox.com/s/tq7pufyn1wgs7s4/E%20field_tetrahedral%20mesh.mph?dl=0