[hssnjfry]

hi
How large eddy simulation distinguishes between small and large eddy ? and How is diagnosed in formula؟

[davidwilcox]

This is useful in answering your question.


http://www.eng.utah.edu/~rstoll/LES/.../Lecture04.pdf

[FMDenaro]

Originally Posted by hssnjfry

hi
How large eddy simulation distinguishes between small and large eddy ? and How is diagnosed in formula؟

the distinction is not within the LES formulation but it is implied by the choice of the computational grids that set the cut-off wavelength. All vortical structure below such scales are not solved and must be modelled.

[hssnjfry]

Originally Posted by FMDenaro

the distinction is not within the LES formulation but it is implied by the choice of the computational grids that set the cut-off wavelength. All vortical structure below such scales are not solved and must be modelled.

thanks for answer
do you know how set this parameter (cut-off wavelength) in OpenFOAm?