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How to derive capacitance matrix

Posted Jun 25, 2018, 2:22 a.m. EDT Low-Frequency Electromagnetics Version 5.2a 2 Replies

岩 李
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I have a four core cable and I want to get the capacitance matrix over frequency.

I set the common screen to be ground and set the four cores to be different terminal, list them 1 to 4. and set them to be voltage terminal type with voltage of 1V.

I want to use parameter sweep of PortName. However, I am confused about how to define PortName in global parameter definition. I can give a name of PortName, but then what is the expression? I now set it to be PortName again and I get yellow warning. Simulation seems to run but I get nothing in result.

Another question is how can I get the result in a frequency range?

Thanks

2 Replies Last Post Jul 3, 2018, 9:20 p.m. EDT
Nirmal Paudel Tribhuvan University/Electrical Engineering
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Posted: 6 years ago Jun 27, 2018, 8:57 a.m. EDT
Updated: 6 years ago Jun 27, 2018, 8:57 a.m. EDT

Hi,

The following blog post might be helpful here.

https://www.comsol.com/blogs/how-to-calculate-a-capacitance-matrix-in-comsol-multiphysics/

See also this application:

https://www.comsol.com/model/touchscreen-simulator-30841

Best Regards, Nirmal Paudel

Hi, The following blog post might be helpful here. https://www.comsol.com/blogs/how-to-calculate-a-capacitance-matrix-in-comsol-multiphysics/ See also this application: https://www.comsol.com/model/touchscreen-simulator-30841 Best Regards, Nirmal Paudel
岩 李
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Posted: 6 years ago Jul 3, 2018, 9:20 p.m. EDT

Thank you Nirmal

I solved the capacitance problem, but now I have difficulties in inductance. Can you help to take a look at my new post:https://www.comsol.com/forum/thread/181623/how-to-derive-inductance-of-the-3d-transmission-line-under-magnetic-field?last=2018-07-04T01:18:21Z

Thanks in advance.

Thank you Nirmal I solved the capacitance problem, but now I have difficulties in inductance. Can you help to take a look at my new post:https://www.comsol.com/forum/thread/181623/how-to-derive-inductance-of-the-3d-transmission-line-under-magnetic-field?last=2018-07-04T01:18:21Z Thanks in advance.

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