LES: mean velocity and turbulent kinetic energy

MET

Hi guys, I'm simulating an unsteady turbulent flow, using LES with a Smagorinsky-Lilly subgrid model (the Dynamic one). I have a udf to get velocity and velocity gradients in some specific cell of the computational domain.

I have some questions:

1)Since the LES applies a spacial filter to resolve the governig equation of the flow (u= [u]+u'), the velocity values that I get from the flow field are the istantaneous value (u) or the mean velocity value ([u])?

If they are the istantaneous one, how I can get the mean value?

2)How I can find the value of the subgrid turbulent kinetic energy? I need that to calculate the Reynold stress.

Thanks Met