sliding meshes, velocity discontinuity
 

Hi,

I'm simulating a horizontal axis turbine and yet there are some problems on the interface of rotation, where abnormal discontinuity of velocity occurs. Two graphs from the front and side are attached. I leave the default settings on the mesh interface and there are two separate volumes with different faces coincided. Please take a look on the graph and perhaps give me some advices. Thanks.

And I''m using "sliding mesh" with Re~1E+7 and TSR=5 (velocity=1.4m/s, w=0.7rad/s), LES with time step=0.0025 (CFL<0.1). Thank you.