[Aydar Mukhametov]

Hi everyone!
I want to move from calculations in Fluent to the OF. To do this, we compared the results obtained in both programs.

Problem: turbulent flow in a circular channel.
Fluent boundary conditions:
k-w SST turbulence model;
SIMPLE solver scheme;
Inlet velocity 10 m/s;
Turbulence intensity at inlet and outlet 4%;
Pressure outlet 0 Pa.
Geometry:
Circular cross-section channel,diameter 0.1 m, length 100D.
Symmetry on XY, ZX.

The mesh was created in Ansis meshing and transferred to OF via "Fluent3DMeshToFoam"
The first case of the mesh with y+=1 was with the warning "Failed 1 Mesh Checks" and the calculations did not coincide.
The second case with a mesh with y+=94 completely coincided with Fluent.
Mesh.jpg
log_mesh1.txt
log_mesh2.txt

OpenFoam bc:
setupOF_1.zip
k, w, vel, nut same to Fluent.

Please tell me where the error is or why the rough mesh matches the results. What boundary conditions should be set for the mesh with y+=1.