Flow past a cylinder using LES

rogerliu · April 11, 2013, 22:39

Hi everyone,
For case flow past a cylinder at Re=3900, I want to use LES to be the turbulence model. Then, which solver I should use? And for files in ''Constant'' and ''System'', which files I should revise? Thanks very much!!

atmcfd · April 13, 2013, 17:34

Hey Roger,

You can use pisoFoam. As for the settings in the fvSchemes and fvSolution files, its not very different from what you see in RANS, except that you do not have the turbulence variables k,eps, etc. Check out the channel395 tutorial in OF for these files. You might just want to change the choice of schemes used there, but the files are as such good for direct use.

For "constant" you need to have a LESProperties file with your choice of SGS model, damping etc. check the channel395 case for all of these.

Regards

Atm

April 11, 2013, 22:39	Flow past a cylinder using LES	#1
rogerliu New Member Derek2580 Join Date: Nov 2012 Posts: 8 Rep Power: 13	Hi everyone, For case flow past a cylinder at Re=3900, I want to use LES to be the turbulence model. Then, which solver I should use? And for files in ''Constant'' and ''System'', which files I should revise? Thanks very much!!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Drag coefficient of flow past cylinder vs time	pedroxramos	FLUENT	0	January 14, 2013 12:39
Incompressible flow past a 2D rectangular cylinder	Niru	Main CFD Forum	5	February 8, 2011 04:20
flow past a circular cylinder	Senthilkumar	Main CFD Forum	2	April 19, 2009 23:18
flow past a circular cylinder	Polina	Main CFD Forum	0	June 29, 2005 03:22
Flow past a cylinder	ckl	Main CFD Forum	2	October 27, 1999 12:36

April 13, 2013, 17:34		#2
atmcfd Senior Member ATM Join Date: May 2009 Location: United States Posts: 104 Rep Power: 16	Hey Roger, You can use pisoFoam. As for the settings in the fvSchemes and fvSolution files, its not very different from what you see in RANS, except that you do not have the turbulence variables k,eps, etc. Check out the channel395 tutorial in OF for these files. You might just want to change the choice of schemes used there, but the files are as such good for direct use. For "constant" you need to have a LESProperties file with your choice of SGS model, damping etc. check the channel395 case for all of these. Regards Atm