CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Smooth delta in Large Eddy Simulation

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 18, 2021, 18:43
Default Smooth delta in Large Eddy Simulation
  #1
Member
 
Huan Zhang
Join Date: Nov 2020
Posts: 55
Rep Power: 6
Jasper Z is on a distinguished road
Hi,

I am doing LES on a locally refined mesh, so I need to smooth delta. I have found that the ratio of deltas between two cells is no larger than a specified amount, typically 1.15, as it says in "smoothDelta.C".

But I don't know how to set the parameters in "turbulenceProperties". What is the "maxDeltaRatio" of the smoothCoeffs? Do I need to set this value to 1.15?

Can anyone please tell me or is there any tutorial about how to set the parameters? Thanks in advance
Jasper Z is offline   Reply With Quote

Old   January 18, 2021, 18:58
Default
  #2
Member
 
Huan Zhang
Join Date: Nov 2020
Posts: 55
Rep Power: 6
Jasper Z is on a distinguished road
Very appreciate if some one can help me
Jasper Z is offline   Reply With Quote

Old   January 21, 2021, 17:47
Default
  #3
Member
 
Huan Zhang
Join Date: Nov 2020
Posts: 55
Rep Power: 6
Jasper Z is on a distinguished road
anyone knows what maxdeltaratio do?
Jasper Z is offline   Reply With Quote

Reply

Tags
maxdeltaratio, smooth delta


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
Introductory books on Large Eddy Simulation q.z. Main CFD Forum 5 September 20, 2016 06:32
Large eddy simulation for flow around cylinder ash_kul999 OpenFOAM Running, Solving & CFD 5 April 18, 2015 05:47
Mean flow field in Large Eddy Simulation Servantes STAR-CCM+ 1 September 11, 2014 18:32
large eddy simulation amin_veysi OpenFOAM Pre-Processing 2 May 24, 2013 12:36
Large Eddy simulation Andreas Hauser Main CFD Forum 1 May 20, 2000 21:33


All times are GMT -4. The time now is 21:23.