Turbulent incompressible Channelflow - whitch Startcase?

Jem01 · January 31, 2017, 08:10

Hello, i wanna simulate an incompressible turbulente channelflow with cyclic walls. Which Tutorialfile should i start with?

Im trying the "channel395" file but it has no turbulence. Can you recommend a more complete one?

thx a lot!

C-L · February 4, 2017, 06:00

If you run the tutorial case for long enough you will get a turbulent profile. There is a utility 'perturbU' but I think you have to compile it yourself. This introduces small perturbations near the wall which will eventually blow up into a turbulent state.

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January 31, 2017, 08:10	Turbulent incompressible Channelflow - whitch Startcase?	#1
Jem01 New Member Jem Join Date: Dec 2016 Posts: 19 Rep Power: 9	Hello, i wanna simulate an incompressible turbulente channelflow with cyclic walls. Which Tutorialfile should i start with? Im trying the "channel395" file but it has no turbulence. Can you recommend a more complete one? thx a lot!

February 4, 2017, 06:00		#2
C-L Member Charlie Lloyd Join Date: Feb 2016 Posts: 57 Rep Power: 10	If you run the tutorial case for long enough you will get a turbulent profile. There is a utility 'perturbU' but I think you have to compile it yourself. This introduces small perturbations near the wall which will eventually blow up into a turbulent state. Sent from my SM-G920F using CFD Online Forum mobile app Jem01 likes this.

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