# 2D Large Eddy Simulation with fluent?

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 June 21, 2004, 01:12 2D Large Eddy Simulation with fluent? #1 Barry Cole Guest   Posts: n/a Hi Can fluent solve the 2d Flitered NS (Large Eddy Simulation) equations? Also if fluent doesn't offer 2d LES capablitites can anyone sutggest a COMERCIAL code that does. Thanks in advance

 June 21, 2004, 02:36 Re: 2D Large Eddy Simulation with fluent? #2 Jonas Larsson Guest   Posts: n/a Yes, fluent can run the LES model in 2D. However, it doesn't make much sence to do this. LES = Large Eddy Simulation = resolving the large scale turbulent eddies. These large-scale turbulent eddies are 3D by nature and if you run 2D you will not resolve them. Hence, a 2D LES simulation is not going to produce anything physical. It is just a numerical exercise that you might want to do to debug your code or something.

 June 21, 2004, 02:39 Re: 2D Large Eddy Simulation with fluent? #3 Barry Cole Guest   Posts: n/a Ok Thanks

 April 26, 2011, 09:43 Les-2d #4 New Member   Join Date: Feb 2011 Posts: 2 Rep Power: 0 Hi Jonhson, As if you say running LES for 2D is just an numerical excersize then while soving flow over cylinder by LES Model gives different results than K-epsilon.. I means LES model gives close results...though large eddies are absent or 3d in nature....can you please give some idea of same. Since I am trying to solve flow over cylinder...

 October 2, 2013, 13:36 #5 New Member   PSM Join Date: Sep 2013 Posts: 10 Rep Power: 5 use command (rpsetvar 'les-2d? #t) LES will come in models option LES is used for axis-symmetric geometries only mm.abdollahzadeh likes this.

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