Specifying the laminar to turbulent transition location

sylvester · October 3, 2008, 04:13

To get a more accurate drag prediction I want to specify the location where the flow transitions from laminar to turbulent (using simpleFoam).
I have seen a number of posts asking for this specific feature. Has anybody tried this before?

If I have to do this myself how would you recommend me to do this? I was thinking about creating zones, each using a different turbulence model. In the laminar zone I would use either the standard laminar turbulence model, or create a modified turbulence model with all production terms set to zero. Would this be a good method of doing this?

Any help is highly appreciated.

Best regards,
Sylvester

Chrisi1984 · May 15, 2010, 11:07

Have you found a solution?
Can you tell me how you realized using different turbulence models in one mesh as the case may be?

Best regards
Chris

October 3, 2008, 04:13	To get a more accurate drag pr	#1
sylvester Member Roland Join Date: Mar 2009 Location: Netherlands Posts: 92 Rep Power: 17	To get a more accurate drag prediction I want to specify the location where the flow transitions from laminar to turbulent (using simpleFoam). I have seen a number of posts asking for this specific feature. Has anybody tried this before? If I have to do this myself how would you recommend me to do this? I was thinking about creating zones, each using a different turbulence model. In the laminar zone I would use either the standard laminar turbulence model, or create a modified turbulence model with all production terms set to zero. Would this be a good method of doing this? Any help is highly appreciated. Best regards, Sylvester

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May 15, 2010, 11:07		#2
Chrisi1984 Senior Member Join Date: Jan 2010 Location: Stuttgart Posts: 150 Rep Power: 16	Have you found a solution? Can you tell me how you realized using different turbulence models in one mesh as the case may be? Best regards Chris