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Finding the Volume Inside a Data Range for 3D Volume Plots

Posted 8 apr 2021, 04:48 GMT-4 General, Battery Design, Results & Visualization Version 5.3a 2 Replies

Fahrizal Perdana Fahmul
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Hi COMSOL forum!

I am currently working on a Solid Oxide Fuel Cell (SOFC) simulation. I am looking for a way to calculate a "volume of a certain region which considered inside the data range".

I attached the picture of my current problem.

Thank you and regards, Perdana - Student of engineering

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2 Replies Last Post 9 apr 2021, 06:56 GMT-4
Robert Koslover Certified Consultant
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Posted: 5 years ago 8 apr 2021, 10:23 GMT-4
Updated: 5 years ago 8 apr 2021, 10:24 GMT-4

I suggest you integrate a Boolean expression across a larger volume that includes the volume of interest to you. You need to set up your Boolean expression to evaluate to 1 (aka, true) wherever the quantity of interest to you falls within the desired range of values, and 0 (aka, false) wherever the quantity of interest to you falls outside of the desired range of values. Integration can be done via post-processing under Results, or can be set up as a probe.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
I suggest you integrate a Boolean expression across a larger volume that includes the volume of interest to you. You need to set up your Boolean expression to evaluate to 1 (aka, true) wherever the quantity of interest to you falls within the desired range of values, and 0 (aka, false) wherever the quantity of interest to you falls outside of the desired range of values. Integration can be done via post-processing under Results, or can be set up as a probe.
Gunnar Andersson COMSOL Employee

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Posted: 5 years ago 9 apr 2021, 06:56 GMT-4

Robert's advice is the right solution in 5.3a.

In 5.5 and 5.6 you can get a more accurate result by creating a Filter dataset that extracts the region of interest and integrating 1 over the Filter dataset.

Robert's advice is the right solution in 5.3a. In 5.5 and 5.6 you can get a more accurate result by creating a Filter dataset that extracts the region of interest and integrating 1 over the Filter dataset.

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