title: Defining a new class of turbulent flows.
abstract: We apply a method based on the theory of Markov processes to fractal-generated turbulence and obtain joint probabilities of velocity increments at several scales. From experimental data we extract a Fokker-Planck equation which describes the interscale dynamics of the turbulence. In stark contrast to all documented boundary-free turbulent flows, the multiscale statistics of velocity increments, the coefficients of the Fokker-Planck equation, and dissipation-range intermittency are all independent of Rλ (the characteristic ratio of inertial to viscous forces in the fluid). These properties define a qualitatively new class of turbulence.
authors.affiliation: Institute of Physics, University of Oldenburg, 26111 Oldenburg, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Stresing
authors.forename: J
authors.initials: J
authors.lastname: Peinke
authors.forename: R E
authors.initials: RE
authors.lastname: Seoud
authors.forename: J C
authors.initials: JC
authors.lastname: Vassilicos