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.
Stirred Vessel with Comsol
Posted Oct 7, 2009, 7:47 PM EDT 2 Replies
Please login with a confirmed email address before reporting spam
I'm trying to model a standard stirred tank with a rushton impeller, and I'm finding it quite a difficult task!
The system is in a full laminar regime for stirred tanks ( Re < 10 )
I started with a simple 2d model using the moving mesh (ALE) and very small length scale (impeller diameter is about 10^-3 m, rpm imposed so that Re = 1), following guide lines given in the documentation for Deformed Meshes and Incompressible Navier-Stokes.
I was able to run a transient simulation of an impeller rotating in a cylindrical geometry, even though problems arise as I try to get closer to Re = 10. I guess I'm not running the model with optimal solver or mesh parameters, since it's still a laminar problem.
When I tried a 3d model using the same approach I was never, ever able to get initial values...
Has anyone (succesfully) tried such a simulation? I'm starting to think that maybe a full 3d fluid simulation with moving mesh is too much to handle for COMSOL, even for "small" systems.
Thanks for any answer!
Hello Marco Formisano
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.