Dissemin is shutting down on January 1st, 2025

Published in

IOP Publishing, New Journal of Physics, 3(12), p. 033040, 2010

DOI: 10.1088/1367-2630/12/3/033040

Links

Tools

Export citation

Search in Google Scholar

The interaction between a solid particle and a turbulent flow

Journal article published in 2010 by Aurore Naso, Andrea Prosperetti ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Green circle
Published version: archiving allowed
Data provided by SHERPA/RoMEO

Abstract

The interaction between a fixed solid spherical particle and stationary turbulence with zero mean flow is investigated numerically. The object diameter, D, lies in the inertial range (D≈0.6L≈0.9λ≈8η, where L, λ and η, respectively, denote the integral scale, the Taylor microscale and the Kolmogorov length) and the particle Reynolds number is close to 20. It is found that the turbulence statistics at different distances from the solid/fluid interface are modified by the presence of the object in a region that extends more than 10 times further than the viscous layer. This estimate is confirmed by the analysis of the correlation between the force and torque on the particle and the force and torque on spherical surfaces surrounding the particle, although the torque decorrelates somewhat faster with increasing distance from the object surface. The angular slip velocity of the particle, a quantity of crucial importance for the modeling of the turbulent transport of large objects, is also characterized.