LES of a particle-laden turbulent channel flow

Research output: Contribution to conferenceOtherAcademic

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.

Conference

Conferenceconference; Lecture given at: Contactgroep Turbulentie, TU-Delft; 2010-10-04; 2010-10-04
Period4/10/104/10/10
OtherLecture given at: Contactgroep Turbulentie, TU-Delft

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channel flow
large eddy simulation
risers
particle collisions
collisions
skin friction
particle interactions
dynamic models
boundary layers
statistics
formulations
causes
approximation

Cite this

Vreman, A. W., Geurts, B. J., Deen, N. G., & Kuipers, J. A. M. (2010). LES of a particle-laden turbulent channel flow. conference; Lecture given at: Contactgroep Turbulentie, TU-Delft; 2010-10-04; 2010-10-04, .
Vreman, A.W. ; Geurts, B.J. ; Deen, N.G. ; Kuipers, J.A.M./ LES of a particle-laden turbulent channel flow. conference; Lecture given at: Contactgroep Turbulentie, TU-Delft; 2010-10-04; 2010-10-04, .
@conference{f8a7f7592df94516afbce53f17c0e6a0,
title = "LES 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 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.",
author = "A.W. Vreman and B.J. Geurts and N.G. Deen and J.A.M. Kuipers",
year = "2010",
language = "English",
note = "conference; Lecture given at: Contactgroep Turbulentie, TU-Delft; 2010-10-04; 2010-10-04 ; Conference date: 04-10-2010 Through 04-10-2010",

}

Vreman, AW, Geurts, BJ, Deen, NG & Kuipers, JAM 2010, 'LES of a particle-laden turbulent channel flow' conference; Lecture given at: Contactgroep Turbulentie, TU-Delft; 2010-10-04; 2010-10-04, 4/10/10 - 4/10/10, .

LES of a particle-laden turbulent channel flow. / Vreman, A.W.; Geurts, B.J.; Deen, N.G.; Kuipers, J.A.M.

2010. conference; Lecture given at: Contactgroep Turbulentie, TU-Delft; 2010-10-04; 2010-10-04, .

Research output: Contribution to conferenceOtherAcademic

TY - CONF

T1 - LES of a particle-laden turbulent channel flow

AU - Vreman,A.W.

AU - Geurts,B.J.

AU - Deen,N.G.

AU - Kuipers,J.A.M.

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

M3 - Other

ER -

Vreman AW, Geurts BJ, Deen NG, Kuipers JAM. LES of a particle-laden turbulent channel flow. 2010. conference; Lecture given at: Contactgroep Turbulentie, TU-Delft; 2010-10-04; 2010-10-04, .