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Reducing computation time of model by splitting about symmetry plane - help needed
Posted Sep 1, 2015, 11:21 a.m. EDT RF & Microwave Engineering, Geometry, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 5.0 2 Replies
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Hi,
I am doing a model where I want to compute the eigen solutions of a system of two coupled split-rings at different separation distances. In order to reduce computation time, i have split the system in half about the symmetry plane (the plane that would cut the rings in half about the splits). So the PML is halved too. I have built this model in geometry, added materials of the system (assuming rings made of copper, don't want PEC for this model as I want to make comparison with my experiments), assigned far-field scattering, impedance boundary and other necessary conditions to model. The problem is that I am unable to choose the outermost boundaries of PML to "Scattering Boundary Condition" as they display 'Not Applicable'.
(1) Can someone please help me fix this issue by explaining what I did wrong?
(2) Is there a symmetry condition that I need to add to the model to let COMSOL know that I have split the model only to reduce computation time?
Please find the model attached. Thank you in advance.
I am doing a model where I want to compute the eigen solutions of a system of two coupled split-rings at different separation distances. In order to reduce computation time, i have split the system in half about the symmetry plane (the plane that would cut the rings in half about the splits). So the PML is halved too. I have built this model in geometry, added materials of the system (assuming rings made of copper, don't want PEC for this model as I want to make comparison with my experiments), assigned far-field scattering, impedance boundary and other necessary conditions to model. The problem is that I am unable to choose the outermost boundaries of PML to "Scattering Boundary Condition" as they display 'Not Applicable'.
(1) Can someone please help me fix this issue by explaining what I did wrong?
(2) Is there a symmetry condition that I need to add to the model to let COMSOL know that I have split the model only to reduce computation time?
Please find the model attached. Thank you in advance.
2 Replies Last Post Sep 2, 2015, 4:45 a.m. EDT
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Posted:
9 years ago
You don't seem to have included the PML domains in your computational space. In the Model Builder, if I click on the Electromagnetic Waves, Frequency Domain (emw) there, all it shows is domain number 3.
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Posted:
9 years ago
Hi Robert,
Thank you for your response.
Edited response: After you mentioned it, I clicked Electromagnetic Waves, Frequency Domain (emw) and under Domain Selection, I chose 'All Domains'. Now all the domains are included and I am able to choose Scattering Boundary Condition. I'll post again if I run into any other issues. Thank you once again.
Regards,
Sathya.
Thank you for your response.
Edited response: After you mentioned it, I clicked Electromagnetic Waves, Frequency Domain (emw) and under Domain Selection, I chose 'All Domains'. Now all the domains are included and I am able to choose Scattering Boundary Condition. I'll post again if I run into any other issues. Thank you once again.
Regards,
Sathya.