title: Lagrangian views on turbulent mixing of passive scalars.
abstract: The Lagrangian view of passive scalar turbulence has recently produced interesting results and interpretations. Innovations in theory, experiments, simulations and data analysis of Lagrangian turbulence are reviewed here in brief. Part of the review is closely related to the so-called Kraichnan model for the advection of the passive scalar in synthetic turbulence. Possible implications for a better understanding of the passive scalar mixing in Navier-Stokes turbulence are also discussed.
authors.affiliation: Department of Physics and the Courant Institute of Mathematical Sciences, New York University, New York, NY 10021, USA. krs3@nyu.edu
authors.forename: Katepalli R
authors.initials: KR
authors.lastname: Sreenivasan
authors.forename: Jörg
authors.initials: J
authors.lastname: Schumacher