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Electric Field dependant Equation entry in COMSOL 5.2
Posted 07.07.2016, 16:07 GMT-4 Low-Frequency Electromagnetics, RF & Microwave Engineering, Battery Design, Materials, Mesh, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 5.1 9 Replies
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I want to know how I can make realize the variable Ey in COMSOL.
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Pu, ZHANG
DTU Fotonik
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-RA
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Besides using the Equation View button, another approach consists in using the postprocessing tools, see for instance www.comsol.com/community/forums/general/thread/114702 .
Another neat approach is now available in version 5.2a. We've added (or, to be more accurate I should say, we've greatly expanded) autocomplete. So, let's say you want to set the conductivity to "1+the y component of the electric field computed by the ec physics interface" but you don't know the syntax for the y component of the electric field computed by the ec physics interface. In the text field where you specify the conductivity, you can start typing "1+ec." then go Ctrl+Space, and the GUI will tell you all the possible completions (and their explanations), one of which is ec.Ey . See screenshot attached.
This is one of my favorite new features at version 5.2a .
Best,
Jeff
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Thank you very much for your informative reply. I am trying to do exactly what you just said ! I am trying to vary the material conductivity with electric field component in y direction. Moreover, my conductivity here is an-isotropic in nature. So, in this case I would like to vary conductivity in x direction with electric field component in y direction.
However, I am using Electromagnetics Waves module, COMSOL 5.1 and I want to know whether you have the same facility in this version as well. I used emw.Ey to define E-field in y direction but still showing me an error.
Would you help me to define conductivity in x direction (anisotropic) as a function of Electric field in y direction for COMSOL 5.1? I have looking for these for hours and I am sure that I am missing something.
Thanks,
RA
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The autocomplete feature is new (or, again, to be more accurate, greatly expanded) at version 5.2a.
The other techniques discussed above should work at 5.1.
Best,
Jeff
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-RA
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I have tried vary the conductivity in x direction with 1+electric field in y direction, in COMSOL 5.1. I am not sure whether the physics is working or not. Would you please let me know how to do this in COMSOL 5.1 version. Please provide a screenshot of the conductivity tensor in this case for better understanding.
I have attached a screenshot to show I did it in COMSOL 5.1 version. Not sure though about the physics inside working or not.
Thanks,
RA
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I am not an expert in EM. If your license is under a subscription contract, I invite you to contact COMSOL technical support at support@comsol.com .
Best regards,
Jeff
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-RA
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