code_saturne User's Forum

Thank you Luciano,
for the moment i tried the easy solution : playing with head losses instead of density and increase relaxation. Avoiding storng jumps is quite difficult because of the algorithm nature, i'm using BESO that has only logic conditions ( in solid BESO top-opt it has only density = 1 or 0 ). I'm trying to find a good value of head loss coefficients to prevent fluid motion and avoiding convergence issues. There are some initial results that i would like to share with you all:

https://www.youtube.com/watch?v=QbHGT2Etdzk&

Code_saturne has a very strong capability to perform CFD topology optimization.

I hope more results will come.

Thank you all again.

Andrea

Hello Andrea,

Nice video!

Do you update the head loss factor in each iteration? Or you lead to the fluid flow to adapt to the new head loss factor distribution.

Regards,

Luciano

Hi, every X iterations i increase the head loss in the cells i want to penalise. During this X iterations the flow adapts and then i penalise again. Now i want to add a kind of filter to prevent "chequered" zone.