About this Engineering article
Anomalous Velocity Fluctuations in Particulate Turbulent Channel Flow by Koji Fukagata; Said Zahrai; Shunsuke Kondo; Fritz H. Bark is a Engineering article available to read on EtoBox.
Gas-particle turbulent channel ̄ow at Re s 644, loaded with copper particles at a mass ̄ow 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 in ̄uence of particle wall boundary conditions and their in ̄uence on the statistical structure of the ̄ow. 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 dierent components even at low mass loading conditions.
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- Author
- Koji Fukagata; Said Zahrai; Shunsuke Kondo; Fritz H. Bark
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0301-9322)
- Published
- 2001
- Language
- EN
- Field
- Engineering (Physical Sciences)