I have already found a solution to compute visco-elastic stresses in COMSOL, but I want to add this extra term in COMSOL Fsi module, but i can't find any where where i can edit the governing equation in COMSOL version 5.3a. any ideas? the problem is to study visco elastic effect in forces exerted on a buoyant particle in flow.
Dear Saeed,
modifying the material model in COMSOL is something that you cannot do directly. You need a external materials routine to do so, check the following article from COSMOLs blog:
https://uk.comsol.com/blogs/how-to-implement-elastoplasticity-in-a-model-using-external-materials/
Kind regards,
Julian
Dear Julian, I have also used equation view, where some parameters are defined such as spf.Tstressx (total stress) . there i Have added the extra stresses, but I am not sure that is correct,
best regards,
Saeed Shoaee
I want to add the penalty term as you suggested in the paper "Topology optimization method with finite elements based on the k-ε turbulence model" Could someone guide me on how to add the penalty terms for Eq. (11) and (12) as shown:
In COMSOL you can add "Weak contributions" to the equations. So you would need to figure out what COMSOL calls the turbulence variables internally.
- Badges
- Science topic
- Similar topics
- Biological Science
- Physiology
- Physiological Processes
- Stress