Rapid growth of Coalescing Droplets and Observation of Fine Structures in Turbulent Flow etc15 Tracking Number 467Presentation: Session: Atmospheric turbulence 4 Room: Room C Session start: 13:30 Wed 26 Aug 2015 Ewe-wei Saw ewsaw@oca.eu Affifliation: Jeremie Bec jeremie.bec@gmail.com Affifliation: Holger Homann holger@oca.eu Affifliation: Samriddhi Sankar Ray samriddhisankarray@gmail.com Affifliation: Bérengère DUBRULLE berengere.dubrulle@cea.fr Affifliation: François Daviaud francois.daviaud@cea.fr Affifliation: Topics: - Atmospheric turbulence, - Turbulence in multiphase and non-Newtonian flows, - Vortex dynamics and structure formation Abstract: I will present our results on size-growth dynamics of coalescing droplets in simulation of isotropic turbulent flow. In the short time limit, we observe very fast growth due to correlations of these droplets which can be related to the interaction between their inertia to turbulent advection (this work is done with colleagues at affiliations 1 \& 2). In a later part, I will describe our attempt to experimentally observe the intermittent fine structures of turbulence flow using high resolution Particle Image Velocimetry (PIV) technique (this work is done with colleagues at affiliation 3). |