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Is it possible to have a 3d LES simulation by using Fluent

- June 25, 2020 at 10:24 am
  
  tayyaba.bano
  Subscriber
  
  Hi everyone,
  
  with reference to the attached video, is the command used for LES model (rpsetvar 'les-2d? #t) same for both 3d and 2d or should it be
  
  (rpsetvar 'les-3d? #t) for 3d? because when I do this for my 3d case,it states:Undefined variable
  
  https://www.youtube.com/watch?v=wAoXIyVOY9E
  
  waiting for your kind response.
  
  Tayyaba
- June 25, 2020 at 11:42 am
  
  DrAmine
  Ansys Employee
  
  LES is actually only 3D and that is the default behavior. You do not need to activate any hidden flag. 2D LES is just a "goodie" and not recommended and I will say is not as one would expect from real LES.
- June 30, 2020 at 10:00 am
  
  tayyaba.bano
  Subscriber
  
  Thank you very much for your kind reply. It means it is just a default laminar simulation.
  
  Regards
  
  Tayyaba
- June 30, 2020 at 12:23 pm
  
  DrAmine
  Ansys Employee
  
  Not really understand your question. What do you mean?
- July 1, 2020 at 9:00 am
  
  tayyaba.bano
  Subscriber
  
  I mean the default setting of Fluent is for LES, there is no need to activate it by any command.
  
  Regards
  
  Tayyaba
- July 1, 2020 at 2:30 pm
  
  Rob
  Forum Moderator
  
  You can turn LES turbulence on in the viscous models panel. Fluent defaults to laminar or k-omega depending on which version you're using.
- July 1, 2020 at 2:55 pm
  
  DrAmine
  Ansys Employee
  
  Read Mesh, Switch LES, EnJoY!
- July 2, 2020 at 10:21 am
  
  tayyaba.bano
  Subscriber
  
  Thanks
- July 2, 2020 at 12:32 pm
  
  DrAmine
  Ansys Employee
  
  Mark as "Is Solved".

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