@inproceedings{d7d2a56f04c14e4699ee1b67e53a2632,
title = "Large-eddy simulation of a particle-laden turbulent channel flow",
abstract = "Large-eddy simulations of a vertical turbulent channel flow with 420,000 solid particles are performed in order to get insight into fundamental aspects of a riser flow The question is addressed whether collisions between particles are important for the ow statistics. The turbulent channel ow corresponds to a particle volume fraction of 0.013 and a mass load ratio of 18, values that are relatively high compared to recent literature on large-eddy simulation of two-phase flows. In order to simulate this ow, we present a formulation of the equations for compressible ow in a porous medium including particle forces. These equations are solved with LES using a Taylor approximation of the dynamic subgrid-model. The results show that due to particle-fluid interactions the boundary layer becomes thinner, leading to a higher skin-friction coefficient. Important effects of the particle collisions are also observed, on the mean fluid prole, but even more o on particle properties. The collisions cause a less uniform particle concentration and considerably flatten the mean solids velocity prole.",
author = "A.W. Vreman and B.J. Geurts and N.G. Deen and J.A.M. Kuipers",
year = "2004",
language = "English",
isbn = "978-90-481-6575-9",
series = "Ercoftac Series",
publisher = "Kluwer Academic Publishers",
pages = "155--162",
editor = "R. Friedrich and B.J. Geurts and O. M{\'e}tais",
booktitle = "Direct and large-eddy simulation V : proceedings of the fifth international ERCOFTAC workshop on direct and large-eddy simulation, held at the Munich University of Technology, August 27-29, 2003",
address = "Netherlands",
note = "5th ERCOFTAC Workshop on Direct and Large-Eddy Symulation (DLES5), August 27-29, 2003, Munich, Germany ; Conference date: 27-08-2003 Through 29-08-2003",
}