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Old   October 8, 2006, 20:20
Default How to use LES
  #1
superfool
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I get some materials which show some cases using LES, but when i do it ,i find that i cannt use LES for 2D problems.Dear friends, please give some advices how to solve 2D problems using LES by FLUENT software?
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Old   October 11, 2006, 13:29
Default Re: How to use LES
  #2
sarah_ron
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see the previous posts, there are some discussions on this topic
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Old   October 11, 2006, 17:16
Default Re: How to use LES
  #3
zxaar
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there is a way to activate 2d les, i have forgotten the command and unable to find it.
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Old   October 11, 2006, 17:32
Default activate LES 2D
  #4
zxaar
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This is how you can activate 2d les, (on command prompt)

(rpsetvar 'les-2d? #t)
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Old   October 11, 2006, 21:06
Default Re: activate LES 2D
  #5
dialynw
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I have the same question.you say use (rpsetvar 'les-2d? #t) , I hade down, but it can run.The console present " invalid command [rpsetvar]" sorry ,I'm chinese, my english ability is poor.

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Old   October 12, 2006, 00:26
Default Re: activate LES 2D
  #6
dialynw
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dear zxaar, Thank you for your answer. I try it again .It do can run. Now I can run les-2d.
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Old   October 12, 2006, 03:37
Default Re: How to use LES
  #7
nabeh
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dear friend Im interesting in simulation of Aero-Acoustics noise using LES turbulent model. If you have any tutorials related to this topic please send it to me
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Old   October 12, 2006, 20:34
Default Re: How to use LES
  #8
zxaar
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Dear Friend you are really in bad luck, because how to enable 2d les i could find out from a 'Aero-Acoustics noise using LES ' tutorial. And due to hard disk crash I lost all the data relevant to fluent tutorials and other docs. So i can not mail you that. But if you try to search the fluent tutorials of version 6.18 or before you might get that tutorial. More than this I am afraid I can not do.
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Old   October 15, 2006, 12:13
Default Re: How to use LES
  #9
nabeh
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dear zxaar thanks for replay i will try search the internet
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Old   October 16, 2006, 05:34
Default Re: activate LES 2D
  #10
superfool
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Dear Friends,Could tell me how to run in detail? I tried but failed. i don't know how to run (in FLUENT 6) Really. thx!!
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Old   October 16, 2006, 06:14
Default Re: activate LES 2D
  #11
zxaar
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its easy: start fluent 2d

go to command prompt of fluent and type letter by letter (exactly with () ):

(rpsetvar 'les-2d? #t)

it should work, i have done it many times.

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Old   October 16, 2006, 18:29
Default Re: activate LES 2D
  #12
superfool
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Thank you very much!!it works!!so can you tell me why it happens or what else can happen by the way?
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Old   October 16, 2006, 19:54
Default Re: activate LES 2D
  #13
zxaar
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we did not do nothing much:

look at the command

(rpsetvar 'les-2d? #t)

rpsetvar is scheme command for setting a value of a variable, we set the value of variable les-2d to t or true.

or in other words we enable the les-2d, using the command in () is syntax of fluent. By the same way you can enable lot of things, if you want to explore it, there is a way to do it,

take a very small mesh , may be 100 cells odd, setup a case and save the case as ascii from fluent.

open that case file on word pad, you can figure out lot of such variables doing lot of stuff.

try it, i learnt a lot from it
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