Serious bug in LES interface

henry · November 16, 2009, 04:47

Thank you for performing these rigorous comparison tests; it is always useful to have our developments independently checked in the way.

Concerning the comparison with DNS we have also noticed that this case is not very accurate but the mesh is quite coarse. The other issue is that there is more than one way to normalize the results and the different approaches give different comparisons so you might want to investigate this.

H

fs82 · November 16, 2009, 08:15

I agree with you, the mesh seems to be to coarse for a validation. But I dont want to investigate this further. I will go back to my own model. Now I know OpenFoam 1.6 and my modified pisoFoam solver works correctly and there should be a problem somewhere in the implementation of my model. May be it is very simple, e.g. to short averaging time or something like that. I will have a look :-D Thx for your help.

kind regards,
Fabian

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Wind turbine simulation	Saturn	CFX	58	July 3, 2020 01:13
Bug in Dynamic 1Eq Eddy Viscosity LES Model Incompressible flow	harishg	OpenFOAM Bugs	5	December 2, 2008 18:18
Bug? about direct CAD interface of ICEMCFD5.0!	whiz	CFX	1	March 10, 2005 15:11
Convective Heat Transfer - Heat Exchanger	Mark	CFX	6	November 15, 2004 15:55
Replace periodic by inlet-outlet pair	lego	CFX	3	November 5, 2002 20:09

November 16, 2009, 04:47		#21
henry Senior Member Join Date: Mar 2009 Posts: 854 Rep Power: 22	Thank you for performing these rigorous comparison tests; it is always useful to have our developments independently checked in the way. Concerning the comparison with DNS we have also noticed that this case is not very accurate but the mesh is quite coarse. The other issue is that there is more than one way to normalize the results and the different approaches give different comparisons so you might want to investigate this. H

November 16, 2009, 08:15		#22
fs82 Senior Member Dr. Fabian Schlegel Join Date: Apr 2009 Location: Dresden, Germany Posts: 222 Rep Power: 18	I agree with you, the mesh seems to be to coarse for a validation. But I dont want to investigate this further. I will go back to my own model. Now I know OpenFoam 1.6 and my modified pisoFoam solver works correctly and there should be a problem somewhere in the implementation of my model. May be it is very simple, e.g. to short averaging time or something like that. I will have a look :-D Thx for your help. kind regards, Fabian