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Anomalous velocity fluctuations in particulate turbulent channel flow
KTH, Tidigare Institutioner                               , Mekanik.
2001 (engelsk)Inngår i: International Journal of Multiphase Flow, ISSN 0301-9322, E-ISSN 1879-3533, Vol. 27, nr 4, s. 701-719Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Gas-particle turbulent channel flow at Re-tau = 644, loaded with copper particles at a mass flow ratio of 2%, is studied numerically by large eddy simulation (LES) coupled with Lagrangian particle tracking (LPT), Inter-particle collisions and correction of drag force in the vicinity of walls are accounted for. Focus is made on the influence of particle wall boundary conditions and their influence on the statistical structure of the flow, It is shown that accordance with experimental data can be improved if a mechanism which can suppress the direct re-entrainment of particles after the impact at the wall is present. Present result shows that inter-particle collisions may play an important role in the re-distribution of particle momentum among different components even at low mass loading conditions,

sted, utgiver, år, opplag, sider
2001. Vol. 27, nr 4, s. 701-719
Emneord [en]
two-phase flow, gas-particle flow, turbulence, lagrangian particle tracking, large eddy simulation, interparticle, collision, bimodality, particles, intensity
Identifikatorer
URN: urn:nbn:se:kth:diva-20451DOI: 10.1016/S0301-9322(00)00049-5ISI: 000167576400008OAI: oai:DiVA.org:kth-20451DiVA, id: diva2:339146
Merknad
QC 20100525Tilgjengelig fra: 2010-08-10 Laget: 2010-08-10 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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