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Interaction of a Particle‐Laden Gaseous Jet with a Confined Annular Turbulent Flow
Author(s) -
Chen XiQing,
Renksizbulut Metin,
Li Xianguo
Publication year - 2001
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/1521-4117(200110)18:3<120::aid-ppsc120>3.0.co;2-2
Subject(s) - turbulence , mechanics , reynolds stress , flow (mathematics) , reynolds number , particle (ecology) , jet (fluid) , physics , mean flow , finite volume method , two phase flow , particle laden flows , large eddy simulation , k epsilon turbulence model , materials science , geology , oceanography
A numerical analysis of polydispersed glass particles interacting with a confined turbulent bluff‐body flow was performed by combining the finite‐volume method for the gaseous flow with a mesh‐free Lagrangian approach for the particulate flow. Three turbulence‐closure models, namely the Reynolds‐stress, the standard k ‐ϵ, and the nonlinear k ‐ϵ models, were first comparatively studied for the single‐phase flow. The second‐moment Reynolds‐stress model was then selected for the prediction of the turbulent gaseous flow in a gas‐particle system, where an improved eddy‐interaction model was used to predict turbulence‐induced particle dispersion. The interaction between the two phases was accounted for through coupling source terms. Numerical predictions of two‐phase mean and fluctuating velocities for particle sizes ranging from 15 to 115 μm were compared with corresponding experimental data. Reasonably good agreement was achieved for the mean properties of both the gaseous and particulate flows.