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How to plot potential along semi-circular arc

Posted 28.01.2021, 12:30 GMT-5 Low-Frequency Electromagnetics Version 5.5 1 Reply

Anwesha Sahu
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I am simulating a model with a charge at potential 5000V at the centre of a circle of radius 5m in 2D axis-symmetric mode. I would like to plot a line graph of how the electric potential varies along an arc of radius 2m inside this circle. How can I do so?

I'm a new user to COMSOL and would appreciate any help.

1 Reply Last Post 28.01.2021, 13:09 GMT-5
Robert Koslover Certified Consultant
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Posted: 4 years ago 28.01.2021, 13:09 GMT-5

Assuming you already have the rest of the model setup with appropriate boundary conditions to compute the potential everywhere, and that it works fine, then: 1. Go back to the Geometry section. Draw the arc. I am presuming you mean the arc to be in the r-z plane. (Right?) 2. Re-mesh and re-execute the problem. 3. Under Results, create a 1D plot group. Add a line graph to it. Choose the arc as the selection for the line graph. 4. Plot your answer. I've attached an example which should be similar enough.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Assuming you already have the rest of the model setup with appropriate boundary conditions to compute the potential everywhere, and that it works fine, then: 1. Go back to the Geometry section. Draw the arc. I am presuming you mean the arc to be in the r-z plane. (Right?) 2. Re-mesh and re-execute the problem. 3. Under Results, create a 1D plot group. Add a line graph to it. Choose the arc as the selection for the line graph. 4. Plot your answer. I've attached an example which should be similar enough.

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