Heavy particle concentration in turbulence at dissipative and inertial scales

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dc.creatorBec, J.
dc.creatorBiferale, L.
dc.creatorCencini, M.
dc.creatorLanotte, A.
dc.creatorMusacchio, S.
dc.creatorToschi, F.
dc.date2006-08-18
dc.date2007-01-02
dc.date.accessioned2026-07-07T08:02:23Z
dc.date.available2026-07-07T08:02:23Z
dc.descriptionSpatial distributions of heavy particles suspended in an incompressible isotropic and homogeneous turbulent flow are investigated by means of high resolution direct numerical simulations. In the dissipative range, it is shown that particles form fractal clusters with properties independent of the Reynolds number. Clustering is there optimal when the particle response time is of the order of the Kolmogorov time scale $τ_η$. In the inertial range, the particle distribution is no longer scale-invariant. It is however shown that deviations from uniformity depend on a rescaled contraction rate, which is different from the local Stokes number given by dimensional analysis. Particle distribution is characterized by voids spanning all scales of the turbulent flow; their signature in the coarse-grained mass probability distribution is an algebraic behavior at small densities.
dc.description4 RevTeX pgs + 4 color Figures included, 1 figure eliminated second part of the paper completely revised
dc.identifierhttps://arxiv.org/abs/nlin/0608045
dc.identifierhttp://arxiv.org/abs/nlin/0608045
dc.identifierPhys. Rev. Lett. 98, 084502 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.084502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/129216
dc.subjectChaotic Dynamics
dc.titleHeavy particle concentration in turbulence at dissipative and inertial scales
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