[nasir.iitd]

Hi everybody,
I already posted my problem earlier but did not get any
reply.
I’m working with RANS followed by LES. My complete domain is rotating. I've set the following BC.
Cell zone => Frame motion > amount of rotation in rad/s > specified rotational axis.
Velocity Inlet => Component>Absolute>cylindrical coordinate>Axial velocity in m/s>Radial and tangential vel. set to 0 m/s >angular vel. Set to 0 rad/s (as frame motion is set).(Snapshots for vel inlet and outlet attached).

Outlet => Pressure outlet>gauge Pr. set 0 >normal to boundary>radially equilibrium pr. distribution>back flow set to 0(as no back pr. in the domain).

Wall => stationary wall (as the frame is rotating by default the wall is also rotating).

Are my settings o.k.? With these settings I simulated the flow but KE decay profile, tangential vel. and radial vel. profiles are not good as expected. There is abrupt rise in KE profile along axial distance near the inlet.

In my case y+ distance is 6.5 i.e. first grid point from wall lying in buffer layer and Re No. is above 50,000. Can LES run give reliable result?
Any suggestion is appreciated.