A model for inertial particles in curvilinear flows
نویسندگان
چکیده
منابع مشابه
Aggregation of inertial particles in random flows.
We consider the trajectories of particles suspended in a randomly moving fluid. If the Lyapunov exponent of these trajectories is negative, the paths of these particles coalesce, so that particles aggregate. Here we give a detailed account of a method [B. Mehlig and M. Wilkinson, Phys. Rev. Lett. 92, 250602 (2004)] for calculating this exponent: it is expressed as the expectation value of a ran...
متن کاملVortices, Complex Flows and Inertial Particles
The properties of vortical structures at high Reynolds number in uniform flows and near rigid boundaries are reviewed. New properties are derived by analysing the dynamics of the main flow features and the related integral constraints, including the relations between mean swirl and bulk speed, the relative level of internal fluctuations to bulk properties, and connections between the steadiness...
متن کاملAnomalous diffusion for inertial particles under gravity in parallel flows.
We investigate the bounds between normal or anomalous effective diffusion for inertial particles transported by parallel flows. The infrared behavior of the fluid kinetic-energy spectrum, i.e., the possible presence of long-range spatiotemporal correlations, is modeled as a power law by means of two parameters, and the problem is studied as a function of these latter. Our results, obtained in t...
متن کاملRenormalized transport of inertial particles in surface flows
Surface transport of inertial particles is investigated by means of the perturbative approach, introduced by Maxey (J. Fluid Mech. 174, 441 (1987)), which is valid in the case the deflections induced on the particle trajectories by the fluid flow can be considered small. We consider a class of compressible random velocity fields, in which the effect of recirculations is modelled by an oscillato...
متن کاملLagrangian and Eulerian descriptions of inertial particles in random flows
Lagrangian and Eulerian descriptions of inertial particles in random flows S. A. Derevyanko a b , G. Falkovich d , K. Turitsyn c & S. Turitsyn a a Photonics Research Group, Aston University , Birmingham, B4 7ET, UK b Institute for Radiophysics and Electronics , Kharkov, Ukraine (on leave), 61085 c Landau Institute for Theoretical Physics , Moscow, 117940, Russian Federation d Physics of Complex...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Microfluidics and Nanofluidics
سال: 2019
ISSN: 1613-4982,1613-4990
DOI: 10.1007/s10404-019-2234-x