A statistical mechanics model of isotropic turbulence well-defined within the context of the expansion
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چکیده
A statistical mechanics model of isotropic turbulence that renormalizes the effects of turbulent stresses into a velocity-gradient-dependent random force term is introduced. The model is well-defined within the context of the renormalization group expansion, as the effective expansion parameter is O( ). The Kolmogorov constant and N parameter of turbulence are of order unity, in accord with experimental results. Nontrivial intermittency corrections to the single-time structure functions are calculated as a controlled expansion in . PACS. 47.27.Ak Fundamentals – 47.27.Gs Isotropic turbulence; homogeneous turbulence – 05.10.Cc Renormalization group methods
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تاریخ انتشار 2003