2020
DOI: 10.14264/ebfa5cc
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Turbulence Modification Due to Inertial Particles in a Rough-Wall Pipe

Abstract: Particle-laden turbulent flows are both technologically important and challenging to understand. This is especially true in rough-walls as opposed to smooth-wall flows, and when the particle loading becomes higher such that particles affect the turbulence-the two-way coupling regime. Depending on the Stokes number and particle volume fraction, turbulence can be suppressed or enhanced by the particles. Direct numerical simulations with the point particles were conducted in order to better understand the particl… Show more

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“…DNS-DEM studies [6,7] are limited to simple flows, a small number of particles, and mainly to the PP approach due to heavy computational requirements. DNS performed on PP in rough-wall pipe with a small Reynold's number indicates that particle volume fraction (α p ) and Stokes number (St) play an important role in turbulent modification [8]. Recently, a two-way coupled DNS study on particle-laden flow highlighted the effects of the particle Stokes number (St) on near-wall turbulence [9].…”
Section: Introductionmentioning
confidence: 99%
“…DNS-DEM studies [6,7] are limited to simple flows, a small number of particles, and mainly to the PP approach due to heavy computational requirements. DNS performed on PP in rough-wall pipe with a small Reynold's number indicates that particle volume fraction (α p ) and Stokes number (St) play an important role in turbulent modification [8]. Recently, a two-way coupled DNS study on particle-laden flow highlighted the effects of the particle Stokes number (St) on near-wall turbulence [9].…”
Section: Introductionmentioning
confidence: 99%