The Measurement of Longitudinal and Transverse Structure Functions in a Turbulent Round Jet

Low-order velocity structure functions in relatively high Reynolds number turbulence

“…For example, for nearly isotropic grid turbulence, ∆ζ(n) may vanish at relatively small R λ [16] although a locally isotropic IR is not evident even at the largest values of R λ that have been possible [16]. Also, the data on the centreline of an axisymmetric jet [17] at R λ 500 indicate smaller values of ∆ζ(n) than those in the present plane jet at R λ 600. The previous observations imply that the magnitude of ∆ζ by no means depends on only R λ .…”