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Forum: Main CFD Forum

November 4, 2010, 18:25

Replies: 9

Mean calculation in LES

Views: 2,163

Posted By rsin

No point in setting up k in the solver

In LES model, turbulence kinetic energy is obtained directly through the filtered veloicty. Similarly, epsilon is also obtained. Even in general sense if you look out, you will see that kinetic...

Forum: Main CFD Forum

November 4, 2010, 02:28

Replies: 9

Mean calculation in LES

Views: 2,163

Posted By rsin

Is your problem solved or still looking for solutions

Hi,
I suppose your problem of finding turbulent kinetic energy should have been solved by now cause what i wrote earlier was pretty straight forward. Earlier, i had no clue about how to find...

Forum: Main CFD Forum

July 15, 2010, 03:11

Replies: 9

Mean calculation in LES

Views: 2,163

Posted By rsin

Dear maani, You don´t have to calculate the...

Dear maani,

You don´t have to calculate the u´, v´, w´ etc.

u´u´ etc are known as the Reynolds stresses and are directly calculated by the LES model through Statistical Reynolds Stresses. So,...

Forum: Main CFD Forum

July 11, 2010, 23:00

Replies: 9

Mean calculation in LES

Views: 2,163

Posted By rsin

By defination turbulent kinetic energy = 1/2...

By defination turbulent kinetic energy = 1/2 (u'u'+v'v'+w'w')

turbulent kinetic energy for LES = 1/2 * (statistical reynolds stresses uu + ...vv + ....ww)

or = 1/2 * (Velocity.Trnrms^2...

Forum: Main CFD Forum

July 8, 2010, 18:59

Replies: 9

Mean calculation in LES

Views: 2,163

Posted By rsin

Is your turbulent kinetic energy has any compositions?

In the case of stirred reactors, turbulent kinetic energy has two compositions: 1) periodic component due to cyclic passage of the blade and 2) random component due to the irregularities and...

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