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Numerical simulation of a spouted bed with a draft tube with and without liquid spray
Author(s) -
Li Tingwen,
Pougatch Konstantin,
Salcudean Martha,
Grecov Dana
Publication year - 2009
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.20161
Subject(s) - draft tube , nozzle , mechanics , fluent , spray nozzle , spray characteristics , computational fluid dynamics , materials science , computer simulation , eulerian path , multiphase flow , flow (mathematics) , thermodynamics , physics , lagrangian , mathematical physics
Numerical simulations of the gas–solid flow in a flat‐based spouted bed with a draft tube (DTSB) are conducted with a Eulerian–Eulerian granular kinetic model. The hydrodynamics of the flow in DTSB is investigated and compared with published experimental data. The effect of the gas velocity on the particles circulation rate is evaluated, and parametric studies of the restitution coefficient are performed. In addition, several different frictional models are tested. A model for the liquid spray injection into a gas–solid flow is proposed and implemented into a commercial CFD solver, Fluent 6.3. The liquid spray introduced through the bottom nozzle is simulated, and the influence of spray rate on solids concentration and velocity inside the draft tube is examined.