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Re: Glitches around cylinder boundary layer


Hi Marc,

Thanks for your reply.

However, the bounce-back condition doesn’t seems to work. Are these strips around the cylinder reasonable in simulation? I mean, how do these strips and glitches arise in the vorticity contour?

I tried SmagorinskyBGK and SmagorinskyMRT as well. It seems these glitches can be tuned somewhat by adjusting Cs but they cannot be fully diminished. Also, at very high Re (50,000 in this case), there are upstream vortex formed in front of the cylinder, as can be show in the following plot:

Best regards,