[caoxuxiang]

Hello everybody,

currently I am investigating on the flow over a contoured ramp using the meshe ( with y+=30 Freestream velocity:20.4m/s; and y+ calculated from CFD Online Y+ Tools )

I used the k-omega-sst model. k, nut, omega were used wallfunctions at top and bottom wall.

My problem is the U profile in the result is fault, the max U is more than 21m/s which have a big difference whih freestream velocity 20.4m/s.

I attached the picture about u with exps, U_x and geometry.

thanks.