Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
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 rotating machinary
Posted 06.07.2012, 05:55 GMT-4 Fluid & Heat, Computational Fluid Dynamics (CFD), Studies & Solvers Version 4.2 2 Replies
Please login with a confirmed email address before reporting spam
I'm trying to model a turbo machine with a rotating machinery turbulent flow. There was a problem with compiling equations which its gone by decreasing the the time step (to 0.001s) however I don't know about the the second error which it's given as:
Failed to find consistent initial values.
Segregated group 1
Matrix has zero on diagonal.
Last time step is not converged.
anyone could help me to solve this problem?
meanwhile I'm attaching the geometry of my turbo machine.
Attachments:
Please login with a confirmed email address before reporting spam
Please login with a confirmed email address before reporting spam
one cannot really tell like that, but it will be a heavy model, have you considered to reduce it to a quadrant and use the symmetry, fluidics need very fine mesh, that could be too your issue just now
--
Good luck
Ivar