title: Abrupt growth of large aggregates by correlated coalescences in turbulent flow.
abstract: Smoluchowski's coagulation kinetics is here shown to fail when the coalescing species are dilute and transported by a turbulent flow. The intermittent Lagrangian motion involves correlated violent events that lead to an unexpected rapid occurrence of the largest particles. This new phenomena is here quantified in terms of the anomalous scaling of turbulent three-point motion, leading to significant corrections in macroscopic processes that are critically sensitive to the early-stage emergence of large embryonic aggregates, as in planet formation or rain precipitation.
authors.affiliation: Laboratoire J.-L. Lagrange, Université Côte d'Azur, OCA, CNRS, Bd. de l'Observatoire, 06300 Nice, France.
authors.forename: Jérémie
authors.initials: J
authors.lastname: Bec
authors.affiliation: International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bangalore 560012, India.
authors.forename: Samriddhi Sankar
authors.initials: SS
authors.lastname: Ray
authors.affiliation: Laboratoire J.-L. Lagrange, Université Côte d'Azur, OCA, CNRS, Bd. de l'Observatoire, 06300 Nice, France.|Laboratoire SPHYNX, SPEC, CEA Saclay, CNRS, 91191 Gif-sur-Yvette, France.
authors.forename: Ewe Wei
authors.initials: EW
authors.lastname: Saw
authors.affiliation: Laboratoire J.-L. Lagrange, Université Côte d'Azur, OCA, CNRS, Bd. de l'Observatoire, 06300 Nice, France.
authors.forename: Holger
authors.initials: H
authors.lastname: Homann