Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Line Integral on topology optimization?

Please login with a confirmed email address before reporting spam

Hello all!

I have conducted a small experiment using topology optimization in conjunction with the heat transfer in solids package. The resulting geometry is rather complex. I am now trying to compare it to conventional designs that exist for the problem I am looking at, and I need some information about the surface area / line length where heat transport can take place.

In the conventional designs, I can select a line integral in the derived vales section, put in 1, select all boundaries and comsol will return the total length. How do I do this with a topology optimized mesh?

Essentially, I have a structure, with a output material volume of 1, surrounded by output material volume 0. How do I return its "circumference"?

Thanks so much for any help! Hope my problem became clear, again thank you! Finn


2 Replies Last Post 2021年8月19日 GMT-4 05:25
COMSOL Moderator

Hello Finn Schero

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.


Acculution ApS Certified Consultant

Please login with a confirmed email address before reporting spam

Posted: 3 years ago 2021年8月19日 GMT-4 04:13

That is probably very tricky. If you export the final topopt contour you can get the information, but I am not sure you can get that information while solving.

-------------------
René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com
That is probably very tricky. If you export the final topopt contour you can get the information, but I am not sure you can get that information while solving.

Henrik Sönnerlind COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 3 years ago 2021年8月19日 GMT-4 05:25

Create a Filter data set that selects the volume containing material, and select it in a Surface Integration node.

-------------------
Henrik Sönnerlind
COMSOL
Create a Filter data set that selects the volume containing material, and select it in a Surface Integration node.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.