Dynamics of vortex filaments in turbulent flows and their impact on particle dispersion

摘要

We study, by means of DNS up to 512~3 resolution (corresponding to Re_λ≈ 180), the dynamics of pointwise particles passively advected by a turbulent fluid. To describe the particle dynamics we integrated numerically the Maxey-Riley equations for the so called "point-particle" model:dv/dt = βDu/Dt+1/T_S(u-v).(1)