CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

convergence problem in the turbomachinery problem.

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   September 7, 2010, 02:07
Default convergence problem in the turbomachinery problem.
New Member
uk jha
Join Date: Apr 2009
Posts: 16
Rep Power: 17
u k jha is on a distinguished road
what are the issue for the convergence of a simulation. In my case I am solving a centrifugal fan problem. In which I am simulating the impeller as well as the volute. I imposed the boundary conditions at
1) inlet : total pressure (0 pa relative pressure)
2) Outlet : mass flow rate:
3) impeller : Rotating wall;
4) casing :stationary wall;
I am using the k- omega turbulence model for solving the turbulent quantities.
I set the convergence criteria as 10e-4 for the velocities and the turbulence quantities.
I am solving the momentum equations with High resolution scheme.
I got struck when the simulation is not conversing up to the 10e-4. but I want it must touch the criteria of the 10e-5.
Can anyone help me where may be the problem? Please suggest me. Thank you.
u k jha is offline   Reply With Quote

Old   September 7, 2010, 18:41
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,771
Rep Power: 143
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
ghorrocks is offline   Reply With Quote


convergence issues, turbomachinery

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
convergence problem commonyue Main CFD Forum 1 December 1, 2009 03:54
Submerged fin, Convergence problem supermouniette FLUENT 10 July 6, 2009 10:47
Convergence of CFX field in FSI analysis nasdak CFX 2 June 29, 2009 01:17
3D Fluid Flow Convergence problem Emily FLUENT 2 March 21, 2007 22:18
Non Convergence of 3D Heat transfer cfd problem Balraj Main CFD Forum 3 December 9, 2004 00:24

All times are GMT -4. The time now is 23:57.