Publications [#281485] of Gabriel G. Katul
- Katul, GG; Porporato, A; Nikora, V, Existence of k⁻¹ power-law scaling in the equilibrium regions of wall-bounded turbulence explained by Heisenberg's eddy viscosity.,
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, vol. 86 no. 6 Pt 2
pp. 066311, ISSN 1539-3755 , [doi]
(last updated on 2022/05/20)
The existence of a "-1" power-law scaling at low wavenumbers in the longitudinal velocity spectrum of wall-bounded turbulence was explained by multiple mechanisms; however, experimental support has not been uniform across laboratory studies. This letter shows that Heisenberg's eddy viscosity approach can provide a theoretical framework that bridges these multiple mechanisms and explains the elusiveness of the "-1" power law in some experiments. Novel theoretical outcomes are conjectured about the role of intermittency and very-large scale motions in modifying the k⁻¹ scaling.