Hi to all,

As it is known that the root mean square of the turbulent velocity fluctuation can be calculated in RANS as follows (if the turbulent kinetic energy k is known );

u'=(2k/3)^0.5

I am doing simulation in OpenFOAM using one equation eddy viscosity model under the framework of impilicit LES and i want to calculated the rms of turbulent velocity for this LES model.

I would like to ask that is there any expression in LES like indicated in RANS to calculate it ?

Thank you. 

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