Very small recirculation length for flow over a circular cylinder

Tarak · May 13, 2011, 18:37

Hii,

I am running the circular cylinder case for Re=3900 using various LES models (oneeqeddy,locDynOneeqeddy etc), but getting very small recirculation length. I am taking a time step of 1e-4 and running till time=2 s. can someone please let me know if he/she has got correct results for a similar case?

Thanks,
Tarak

tfuwa · May 31, 2011, 03:19

Hi Tarak,

I have seen your two posts on the simulation of flow around a circular cylinder with LES models and currently am doing exactly the same case. My first thought on your result is that the running time is too short and 15 s should be good.

Are you doing this case in 2D or 3D? Can you give more information about the simulation?

Regards,
Albert

Tarak · August 31, 2011, 11:27

Hii,

Did you have any luck with this case? Were you able to get a good recirculation length? I am still not being able to get good results.

Thanks

May 13, 2011, 18:37	Very small recirculation length for flow over a circular cylinder	#1
Tarak Senior Member Tarak Join Date: Aug 2010 Location: State College, PA Posts: 111 Rep Power: 15	Hii, I am running the circular cylinder case for Re=3900 using various LES models (oneeqeddy,locDynOneeqeddy etc), but getting very small recirculation length. I am taking a time step of 1e-4 and running till time=2 s. can someone please let me know if he/she has got correct results for a similar case? Thanks, Tarak

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May 31, 2011, 03:19		#2
tfuwa Member Albert Tong Join Date: Dec 2010 Location: Perth, WA, Australia Posts: 76 Blog Entries: 1 Rep Power: 15	Hi Tarak, I have seen your two posts on the simulation of flow around a circular cylinder with LES models and currently am doing exactly the same case. My first thought on your result is that the running time is too short and 15 s should be good. Are you doing this case in 2D or 3D? Can you give more information about the simulation? Regards, Albert

August 31, 2011, 11:27		#3
Tarak Senior Member Tarak Join Date: Aug 2010 Location: State College, PA Posts: 111 Rep Power: 15	Hii, Did you have any luck with this case? Were you able to get a good recirculation length? I am still not being able to get good results. Thanks