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December 26, 2013, 15:01
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Physical meaning of TKE
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#1 |
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New Member
Ahmad jibreel
Join Date: Oct 2013
Posts: 6
Rep Power: 13  |
Can any body tell me the physical meaning of turbulent kinetic energy and eddy viscosity.
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December 26, 2013, 15:11
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#2 |
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Senior Member
cfdnewbie
Join Date: Mar 2010
Posts: 557
Rep Power: 20 |
The TKE is just the kinetic energy in the fluctuating parts of the flow, i.e. everything but the mean KE. It is thus a measure of the "strength" of the turbulence, and the distribution of KE across different length scales or eddies. Eddy viscosity a modelling or numerical concept, there is no physical meaning to it besides the fact that it aims to mimic the dissipative effect of the unresolved scales.
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January 6, 2014, 05:31
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#3 |
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New Member
Ahmad jibreel
Join Date: Oct 2013
Posts: 6
Rep Power: 13 |
thanx very nice reply....
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