Calculation of the turbulent kinetic energy

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 March 18, 2016, 05:02 Calculation of the turbulent kinetic energy #1 New Member   Petya Stoyanova Join Date: Jul 2015 Posts: 4 Rep Power: 4 When computing the turbulent kinetic energy (and other related quantities) should I include the velocities on the boundaries when Navier slip boundary condition is applied? Navier boundary condition: Us = ls (dUs/dy)wall Us is the slip velocity, ls - the slip length (parameter), and (dUs/dy)wall is the velocity gradient at the wall. Also how should I do it if my mesh is non-uniform in one direction?

 March 21, 2016, 01:11 #2 Senior Member   david Join Date: Oct 2012 Posts: 142 Rep Power: 7 tke applies only to the fluid.

 March 22, 2016, 02:22 #3 New Member   Petya Stoyanova Join Date: Jul 2015 Posts: 4 Rep Power: 4 Yes, but under slip condition isn't the velocity of the fluid at the boundary different than the velocity of the wall? My question is in that case shouldn't it be included in the calculation of the turbulent kinetic energy? And also I'm bit at a loss when it comes to the mathematical expression of the turbulent kinetic energy in the code itself as the mesh is non-uniform and all the other velocities are calculated in the cell centers. Only the velocities at the boundaries are calculated on the cell faces.

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