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- Title
Turbulent diffusion of passive impurities.
- Authors
Gordienko, S. N.; Moiseev, S. S.
- Abstract
It is shown that in turbulent flows with a divergent Loîtsyanskiî integral, the coefficient of turbulent diffusion may be determined by pulsations whose scales are comparable with those of the liquid itself rather than by the largest-scale turbulent vortices. This is a new physical mechanism which must be taken into account to explain the experimentally observed phenomenon of impurity "hyperdiffusion" in turbulent media. The contribution of large-scale pulsations increases substantially with the onset of turbulence regimes which are accompanied by the spontaneous generation of structures comparable with the dimensions of the liquid.
- Subjects
TURBULENCE; FLUID dynamics
- Publication
Technical Physics Letters, 1999, Vol 25, Issue 4, p271
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/1.1262449