[lollo15]

Hello to all
I am trying to complete a solved simulation on the wall and I set all parameters related to turbulence, k (1e-8), Epsilon(1e-10), nut(1e-10), alphat(1e-10). But I noticed that it creates a peak near the relative wall of epsilon.
Considering that I still get a value of Y+ close to 1 to what might be related problem ?

Thanks a lot for the reply

[flotus1]

What does the computational domain look like?
Which boundary conditions are you using?
Where did you evaluate the results shown in the chart?
What's a relative wall?

[lollo15]

Hi
My 2D domain includes two coaxial injectors from which methane and oxygen come out, in all the walls I used the condition of viscosity and velocity zero, while the values of k, nut, alphat are fixed with fixedValue. The epsilon graph is reported from the axis to the upper wall, so the x axis is the spatial coordiante and the y axis is the value of epsilon, but this condition occurs on all walls and only on the epsilon.

thanks for the reply

[flotus1]

Could you elaborate what the problem is? It is to be expected that the value of epsilon has a maximum close to the wall.