Inertial dissipation method within boundary layers

What is it about?

This paper assesses the accuracy of the inertial dissipation method to estimate the rate of dissipation of turbulent kinetic energy within boundary layers. By performing well-resolved numerical simulations of turbulent channel flows we have evaluated the convection velocity and Kolmogorv constants in different height from the bed

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Why is it important?

We find the errors in this method are due to using the mean velocity to convert frequency spectra to wave number space and applying the theoretical isotropic values of Kolmogorov constants. Including both optimal convection velocities and modified values of the Kolmogorov constants that account for the anisotropy of the flow can result in more than 50% improvement in computation of dissipation.