Large-eddy simulation of a particle-laden turbulent channel flow


Vreman, A.W. and Geurts, B.J. and Deen, N.G. and Kuipers, J.A.M. (2003) Large-eddy simulation of a particle-laden turbulent channel flow. In: 5th International ERCOFTAC Workshop Direct and Large-Eddy Simulation V, August 27-29, 2003, Munich, Germany (pp. pp. 271-278).

open access
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 ows. 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-uid interactions the boundary layer becomes thinner, leading to a higher skin-friction coefcient. Important effects of the particle collisions are also observed, on the mean uid prole, but even more o on particle properties. The collisions cause a less uniform particle concentration
and considerably atten the mean solids velocity prole.
Item Type:Conference or Workshop Item
Copyright:© 2003 Springer
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:
Link to this item:
Official URL:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page

Metis ID: 217235