sliding meshes, velocity discontinuity

f0208secretx · January 12, 2011, 02:22

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.

f0208secretx · January 12, 2011, 02:27

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.

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January 12, 2011, 02:27		#2
f0208secretx Member J.-H. Wang Join Date: Oct 2010 Posts: 72 Rep Power: 16	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.