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On a eulerian and lagrangian combined model in dense particle‐laden riser flow
Author(s) -
Fan Jianren,
Sun Ping,
Ma Yinliang,
Cen Kefa
Publication year - 1999
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.5450770605
Subject(s) - eulerian path , mechanics , turbulence , particle (ecology) , lagrangian , kinetic theory , flow (mathematics) , particle laden flows , physics , statistical physics , classical mechanics , fluidization , two phase flow , thermodynamics , fluidized bed , geology , theoretical physics , oceanography
A new numerical model using both Eulerian and Lagrangian coordinates, and taking account of interparticle interactions, has been developed for the study of hydrodynamic aspects of dense particle‐laden rise flows. A stochastic particle dispersion model has been incorporated in the original model to describe the gas particle turbulent flows. In addition, the collisional interaction between the particles has been modeled using the kinetic theory of granular flows based on the Chapman‐Enskog theory of dense gases. A comparison with the experimental results of Miller and Gidspow (1992) shows reasonably good agreement. The present model may provide a useful approach for predicting the complex hydrodynamic behaviour of fluidized bed systems.