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Forced Transition, how to?

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Old   April 12, 2016, 13:28
Default Forced Transition, how to?
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Hi guys,

lets say I am simulating a 2D airfoil and I do exactly know the point of transition due to a trip on the airfoil's surface.

Since I do not want to use a transition model I was thinking about splitting my surface in laminar and turbulent region an setting the turblence parameters in the laminar region to 0. Do you think this will work out?

Any experience?
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Old   September 24, 2017, 17:18
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Ashish Magar
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Hello there.

I have been trying the same thing since past few weeks. But no success. There is a problem with compilation.

There are some publications which show to modify komegasst and SA models for laminar and turbulent cellzones.

if anyone wants, post in here, I will upload it.
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Old   September 24, 2017, 17:46
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Hello hxaxtma and ashishmagar600.
Could some of You possibly help me running of 2d airfoil case with simpleFoam? I would like to calculate aerodynamic coefficients and separation point and compare it with experimental data. I have successfully run case with laminar turbulence model and with SpartAllmaras turbulence model. I cannot succeed with k-epsilon and k-omega SST turbulence models. It looks like both of You are experienced users. Maybe You could help me and take a look on my case if possible.
Have a nice day.
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