BENDING DYNAMICS OF SEMI-FLEXIBLE PARTICLES IN TURBULENT FLOWS etc15 Tracking Number 444Presentation: Session: Lagrangian aspects of turbulence 2 Room: Room G Session start: 10:30 Thu 27 Aug 2015 Aamir Ali aamir_ali@comsats.edu.pk Affifliation: Emmanuel Lance Christopher VI Plan easyplan@gmail.com Affifliation: Samriddhi Sankar Ray ssray@icts.res.in Affifliation: Dario Vincenzi dario.vincenzi@unice.fr Affifliation: Topics: - Lagrangian aspects of turbulence Abstract: We study the Lagrangian dynamics of semi-flexible particles in laminar as well as in homogeneous and isotropic turbulent flows by means of analytically solvable stochastic models and direct numerical simulations. The statistics of the bending angle is qualitatively different in laminar and turbulent flows and exhibits a strong dependence on the topology of the velocity field. In particular, in two-dimensional turbulence, particles are either found in a fully extended or in a fully folded configuration; in three dimensions, the predominant configuration is the fully extended one. |