[SunnyHere]

Hello Everyone，

I tried to use fluent to simulate the famous Onera-m6 wing. but results in a saw-tooth pattern in the generated pressure distribution.

The mesh I used was a multi-block structured mesh generated by ICEM. the mesh quality should be acceptable as above 0.3.

In fluent I used density-based steady solver with standard S-A turbulent equation, while the fluid was chosen as ideal gas with Sutherland as viscosity equation.Other solution methods are attached.

the boundary condition are chosen as farfield/symm/no-slip wall. the mach number was 0.84 and AOA was 3.06 deg.

However I got the weird unsmooth pressure distribustion(both can be observed from the tecplot figure and fluent pressure contour)


Anyone please provide a reason and solve for this.

thanks.

[SunnyHere]

a ideal figure may look like this. However I am unaware where those sawtooth shape come from.