Nanoparticle stochastic motion in the inertial regime and hydrodynamic interactions close to a cylindrical wall.

ABSTRACT: We have carried out direct numerical simulations (DNS) of the fluctuating Navier-Stokes equation together with the particle equations governing the motion of a nanosized particle or nanoparticle (NP) in a cylindrical tube. The effects of the confining boundary, its curvature, particle size, and particle density variations have all been investigated. To reveal how the nature of the temporal correlations (hydrodynamic memory) in the inertial regime is altered by the full hydrodynamic interaction due to the confining boundaries, we have employed the Arbitrary Lagrangian-Eulerian (ALE) method to determine the dynamical relaxation of a spherical NP located at various positions in the medium over a wide span of time scales compared to the fluid viscous relaxation time τv = a2/v, where a is the s

SUBMITTER: Vitoshkin H 

PROVIDER: S-EPMC5098402 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature