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LES of periodic pipe centerline turbulent kinetic energy |
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November 30, 2010, 23:59
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LES of periodic pipe centerline turbulent kinetic energy
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Member
M. Mahdi Salehi
Join Date: Mar 2009
Location: Vancouver, BC, Canada
Posts: 50
Rep Power: 17  |
Hi Everyone,
I did an LES simulation of a periodic pipe (D=5mm) with channelOodles for the inlet condition of another LES simulation at Re=30,000. The averaged center-line turbulent kinetic energy is 1.5 which is much lower than the experimental value which is 3.85. The computed averaged turbulent kinetic energy is a spatial average in the periodic direction using the obtained LES velocity field. The sub-grid scale turbulent kinetic energy is of order of 0.15 which is negligible. The length of pipe is 5D. I was wondering if anyone knows where this anomaly comes from. |
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