[marya.taher]

Hello everyone.
I am doing embedded LES.
Can anyone guide me how to calculate the quality index of LES (that how much kinetic energy has been resolved)?
I will be extremely grateful

Best regards,
Maria

[lautaro]

Assessing LES quality involves determining how much kinetic energy is captured at resolved scales. You should use spectral analysis, filter width, subgrid-scale model energy, and comparison to reference data to evaluate resolution. Consider grid resolution, SGS model, and flow complexity when interpreting results.

Slope Game

[FMDenaro]

Originally Posted by marya.taher

Hello everyone.
I am doing embedded LES.
Can anyone guide me how to calculate the quality index of LES (that how much kinetic energy has been resolved)?
I will be extremely grateful

Best regards,
Maria

In the region of LES you need of a spectral analysis of the energy content. But the way you can do that depends on your specific flow problem.
Your shoul provide all details about your grid and setting.