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.

Modelling Stirrer with Non-Newtonian, Power Law fluid

Please login with a confirmed email address before reporting spam

Hi everyone

I have tried simulating a pump with non-newtonian fluid being circulated. I have modified the model from library chemEngg/Mixers n stirrers/Schematic Pump1. I replaced Incompressible Navier Stokes with Non-Newtonian, Power Law fluid.

I tried solving for transient solution with rotating blades using Moving Mesh ALE
The solution has hard time converging. I tried Direct PARDISO, UMFPACK and with Generalized Alpha and BDF schemes.

Can you provide suggestions on how I can improve convergence and a better approach to solve power law or any other Non-Newtonian fluids.

Thanks
Praveen


0 Replies Last Post 29 gen 2010, 13:48 GMT-5
COMSOL Moderator

Hello Praveen Nooli

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.

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.