8th European Postgraduate Fluid Dynamics Conference

6th – 9th July 2016
Warsaw, Poland

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Bending dynamics of semi-flexible particles in isotropic turbulence

Aamir Ali1, Emmanuel Lance Christopher VI M. Plan2, Samriddhi Sankar Ray3, Dario Vincenzi2
1Department of Mathematics, COMSATS Intitute of Information Technology, Attock, Pakistan
2Laboratoire Jean Alexandre Dieudonn é, Universit é Nice Sophia Antipolis, CNRS, UMR 7351, 06100 Nice, France
3International Center for Theoretical Sciences, Tata Institute of Fundamental Research, Bangalore 560012, India
We study the Lagrangian dynamics of semi-flexible particles 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
Keywords: Turbulence