CFD Online Logo CFD Online URL
Home > Forums > FLUENT

SST model computation diverge after thousands of iterations

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

LinkBack Thread Tools Display Modes
Old   October 17, 2013, 02:59
Default SST model computation diverge after thousands of iterations
New Member
Join Date: Jan 2013
Posts: 2
Rep Power: 0
fengyan is on a distinguished road
Dear everyone!Now a FLUENT problem occured to me!The computation details are at below.
My computation model is a teardrop shaped vortex generator.I set the front and back faces as periodic boundary condition and set the mass flow rate for it.The two sidewalls are set to be periodic condition also.The downwall is isothermal wall boundary condition and the upwall is adiabat wall. When I start the computation,the residual first decreased quite well.
But when it is nearly converged,the residual start to enhance rapidly.I have tried many methods to prevent it but none works.By the way,I have computed some other shaped vortex generator like sphere and eliptical with the same mesh.They all converged quite well.
I hope someone can help me solve this problem.It puzzled me so long time.Thank you in advance.
fengyan is offline   Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
Why RNGkepsilon model gives floating error shipman OpenFOAM Running, Solving & CFD 3 September 7, 2013 08:00
problem with Min/max rho tH3f0rC3 OpenFOAM 7 February 23, 2013 06:37
Interfoam blows on parallel run danvica OpenFOAM Running, Solving & CFD 16 December 22, 2012 03:09
Problems with simulating TurbFOAM barath.ezhilan OpenFOAM 13 July 16, 2009 05:55

All times are GMT -4. The time now is 03:23.