# unsteady results lid driven cavity problem

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 LinkBack Thread Tools Display Modes
 July 20, 2008, 13:05 unsteady results lid driven cavity problem #1 student Guest   Posts: n/a Dear Sir, I have a basic doubt, Does the unsteady result at any particular time level (say suppose t=10) using any method ( like Fractional step method, vorticity stream function method, finite volume method) are same. I can understand the steady state result must be same for any method. But what about unsteady result ? Advices are welcome

 July 20, 2008, 13:50 Re: unsteady results lid driven cavity problem #2 otd Guest   Posts: n/a In a sense, this like asking if the results are the same on a 10 x 10 mesh and a 20 x 20 mesh for the same problem. Or asking if the results are the same for an advective flow when the differencing is upwind-weighted vs. centered differences. You should expect errors between different spatial difference techniques for the steady-state results as well. The approximation errors for each transient method are unique - so the solutions are unique (and different) at any value of t. What you hope for is that the differences at any value of t are small. So the answer is "no", the results should not be the same at any t. But, if each transient method is correctly coded and properly applied, the differences should be "small." Hope this helps.

 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 rajeshkunwar Main CFD Forum 4 February 11, 2011 03:18 kieranhood OpenFOAM Paraview & paraFoam 0 February 13, 2010 17:28 KK FLUENT 1 December 16, 2009 19:10 erwan Main CFD Forum 0 November 25, 2009 11:28 ganesh Main CFD Forum 0 August 5, 2009 20:33

All times are GMT -4. The time now is 16:10.

 Contact Us - CFD Online - Privacy Statement - Top