Comment on 'Dissipation and decay of fractal-generated turbulence' [Phys. Fluids 19, 105108 (2007)]

摘要

We comment on the experimental results of Seoud and Vassilicos "Dissipation and decay of fractal-generated turbulence" [Phys. Fluids 19, 105108 (2007)] and show that, although their main observation that C _ε~Re _λ~(-1) for the fractal square grid-generated turbulence is essentially correct, their quantitative estimations of turbulent quantities depending on small scales (e.g., ε, λ, Re_λ, and C_ε) are biased by their anemometry system.