@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",

}