[malaboss]

Hi FOAMers !
I am studying some airfoils in 2D and before applying any turbulence model to them I test the model on a cylinder.

I tested the komega model which gave me good results with my drag and my strouhal.

However, when I want to see the k field in the domain, I see a high value at the inlet (the one I fixed) and then a fast decrease.
Do you know why I observe it ? Do you know how to fix this ?




My Reynolds is 1000
Here are my boundary conditions :

inlet
U fixed value 0.015
p zerogradient
k fixedValue 0.00000375
epsilon fixedValue 0.0000000112
nut calculated value 0
omega fixedValue 0.037

outlet
U zeroGradient
p fixedValue 0
k zeroGradient
epsilon zeroGradient
nut calculated value 0
omega zeroGradient

up
U symmetryPlane
p symmetryPlane
k symmetryPlane
epsilon symmetryPlane
nut symmetryPlane
omega symmetryPlane

down
U symmetryPlane
p symmetryPlane
k symmetryPlane
epsilon symmetryPlane
nut symmetryPlane
omega symmetryPlane

cylinder
U fixedvalue 0
p zeroGradient
k kqWallfunction 0.00000375
epsilon epsilonWallFunction 0.0000000112
nut nutkWallfunction 0
omega omegaWallFucntion 0.037

frontAndBack
U empty
p empty
k empty
epsilon empty
nut empty


I enclose a screenshot of the kfield with komega so you can see the problem.


Thanks a lot for your help