\n

\nWe developed a novel theo retical concept\, the rate of momentum loss\, and applied it to descri be the transports of mass\, momentum and energy in turbulent mixing fl ow and to capture its anisotropic and inhomogeneous character. It was shown that invariant\, scaling and spectral properties of unsteady tur bulent mixing differ substantially from those of isotropic and homogen eous turbulence. Time- and

\nscale-invariance of the rate of momen tum loss leads to non-dissipative momentum transfer\, to and power-law

\nscale-dependencies of the velocity and Reynolds number and to n on-Kolmogorov spectra. Turbulent mixing exhibits more order compared t o isotropic turbulence\, and its viscous and dissipation scales are fi nite and set by flow acceleration. We suggested how to describe the ra ndom character of the statistically unsteady turbulent flow and showed that the rate of momentum loss is the statistic invariant and a robus t

\ndiagnostic parameter for either sustained or time-dependent ac celeration. Some criteria are outlined for the estimate of the fidelit y and information capacity of the experimental and numerical data sets .

URL:https://www.physics.wisc.edu/events/?id=2115 END:VEVENT END:VCALENDAR