[fazadzulhimam]

what range standard for y plus in turbulent flow?
my case is standard wall function with k - epsilon model
range Re 7000 - 42000

thanks for help
FAZA

[ios]

Originally Posted by fazadzulhimam

what range standard for y plus in turbulent flow?
my case is standard wall function with k - epsilon model
range Re 7000 - 42000

thanks for help
FAZA

If you are using wall function y+>30 sould be safe. If there is severe transition region you may need to use non-equilibrium model. Also if your problem is 2D and it does not require too much computational power you can create your grid finer I mean with y+ ~1 or et least 3-5 by this way you can use enhanced wall function with a good resolution. P.S. I assumed that you are using Fluent.

[fazadzulhimam]

Originally Posted by ios

If you are using wall function y+>30 sould be safe. If there is severe transition region you may need to use non-equilibrium model. Also if your problem is 2D and it does not require too much computational power you can create your grid finer I mean with y+ ~1 or et least 3-5 by this way you can use enhanced wall function with a good resolution. P.S. I assumed that you are using Fluent.

thanks for the answer,
my problem is 3D in tube with length 375mm, in my simulation y+ is too low, how to increase y+ if i use standard wall functions?
i used ANSYS FLUENT for my simulation