[Nek5000-users] freestream turbulence at INLET

[nek5000-users at lists.mcs.anl.gov]

Dear Rif,

In our wing simulation the boundary layers are tripped using a volume  
force in the direction normal to the surface, emulating the approach  
used in wind tunnel experiments. Such tripping devices include sand  
paper and "V" disturbances, and in wind tunnel measurements the  
transition location is prescribed, whereas the turbulence level is  
very low. This is done to obtain a "canonical" developing turbulent  
boundary layer, to ease the study of turbulence effects. This is also  
done in our case, where the turbulence intensity is zero at the  
boundaries (since the velocity is prescribed at all times).

Regarding your simulation, could you gives us more details about your  
setup? What RANS models are using in Fluent, and is it a  
time-dependent simulation? What geometry are you simulating in Nek?

Best regards,

Ricardo Vinuesa.