# convergence problem

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

 November 20, 2004, 21:25 convergence problem #1 sarah_ron Guest   Posts: n/a Dear all, I have a question about convergence criteria by using surface motior. If the residual is oscillatiing but lower than 1e-3 and surface monitor is also oscillating around a constant, is the solution converged? Any reply is welcome. regards, sarah

 November 21, 2004, 12:54 Re: convergence problem #2 akbar Guest   Posts: n/a Dear my friend I have a suggestion for convergence criteria. in addition to residuals you can plot the variation of a parameter as velocity magnitude at a point in your flow domain as the fluent runs. if the magnitude of this parameter reaches to a constant value it means that the solution is converged. hope it will help you. Best wishes A.safarzadeh

 November 21, 2004, 13:52 Re: convergence problem #3 Anton Guest   Posts: n/a What are you trying to simulate? It could mean that your problem is unsteady. You could change to the unsteady solver and monitor the surface variable with time to see if it exhibits an oscillatory pattern.

 November 23, 2004, 00:48 Thanks a lot #4 sarah_ron Guest   Posts: n/a Hi,dear Thank you all for kind reply! I will try according to your advise. sarah

 November 24, 2004, 05:39 Re: Thanks a lot #5 nabeel mohsin Guest   Posts: n/a hi, in monitors if residual is reducing with simulation then it is going to converge

 November 26, 2004, 10:49 To nabeel Re: Thanks a lot #6 sarah_ron Guest   Posts: n/a Thanks a lot! could you give me more hints? thanks sarah

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Forrest_Lei OpenFOAM 3 July 19, 2011 06:00 commonyue Main CFD Forum 1 December 1, 2009 04:54 nasdak CFX 2 June 29, 2009 01:17 Emily FLUENT 2 March 21, 2007 23:18 Balraj Main CFD Forum 3 December 9, 2004 01:24

All times are GMT -4. The time now is 05:47.