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Simulation and experiment on transitional behaviours of multiphase flow in a hydrocyclone
Author(s) -
Wang Chenxiang,
Ji Chen,
Zou Jun
Publication year - 2015
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.22274
Subject(s) - hydrocyclone , volume of fluid method , mechanics , multiphase flow , flow (mathematics) , large eddy simulation , computer simulation , residence time (fluid dynamics) , particle (ecology) , simulation , materials science , engineering , physics , geology , geotechnical engineering , turbulence , oceanography
This paper presents an investigation of transitional behaviours of multiphase flow in a hydrocyclone. The experiment and simulation results reveal the existence of two stages of the transition period of gas‐liquid flow. The numerical model combined with the large eddy simulation model (LES), the volume of fluid model (VOF), and the Lagrangian discrete phase model (DPM) approach is used to simulate the multiphase flow in a hydrocyclone. The applicability of this approach with a 2‐step simulation strategy has been verified by the close agreement between the calculated and measured flow fields. Particle motion upon entering the hydrocyclone indicates the separation mechanism of a hydrocyclone. Moreover, a parameter of the hydrocyclone, separation cycle time T c , is proposed to describe the dynamic characteristics of the particle residence time.