[hedi-72]

Hi everyone,

I'm new to openfoam and trying to find reattachment length of turbulent flow over a backward facing step for my CFD project. the wall shear stress calculation is nearly OK and its almost zero in reattachment point but y+ calculation using yPlusRAS model is significantly different with the documentation. I am unable to figure out why this is happening.
I have provided a few snapshots of y+ and wall shear stress plot for the sake of illustration.

I've done the project with fluent too and I got good resluts for y+ which are in accordance with the documentation.

I'll really appreciate it if anyone could help me with the problem
Thanks in advance

wallshearstress plot.jpg

yplus plot.jpg