Gas-solid flow and energy dissipation in inclined pneumatic conveying

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This article presents a numerical study of inclined pneumatic conveying using the combination of the discrete element model (DEM) for the particles and computational fluid dynamics (CFD) for the gas. In the numerical model, periodic boundary conditions (PBCs) are applied to both gas and particles in the conveying direction for computational efficiency. The validity of the model is first examined by comparing the calculated and measured results in terms of solids flow rate and gas pressure drop during pneumatic conveying with a pipeline inclination angle varying from 0? to 90?. On this basis, the effects of inclination angle, solids flow rate, and gas velocity on gas pressure are quantified. The contributions of different forces including the particle-wall friction force, particle gravitational force, and fluid-wall friction force to the pressure drop are examined. Finally, the energy dissipation as a result of interactions between particles, between particles and wall, between particles and fluid, between fluids, and between fluid and wall is studied in detail. The results show that the energy loss during steady-state inclined pneumatic conveying can mainly be attributed to particle-fluid energy dissipation, gravitational potential energy, particle-wall friction energy dissipation, and fluid-wall viscous energy dissipation. These energy dissipations vary significantly with inclination angle and flow regime.
Original languageEnglish
Pages (from-to)14289 - 14302
Number of pages14
JournalIndustrial and Engineering Chemistry Research
Volume51
Issue number43
DOIs
Publication statusPublished - 2012
Externally publishedYes

Cite this

@article{aa0fa545d0d84bb4b9d00e1601b2ac01,
title = "Gas-solid flow and energy dissipation in inclined pneumatic conveying",
abstract = "This article presents a numerical study of inclined pneumatic conveying using the combination of the discrete element model (DEM) for the particles and computational fluid dynamics (CFD) for the gas. In the numerical model, periodic boundary conditions (PBCs) are applied to both gas and particles in the conveying direction for computational efficiency. The validity of the model is first examined by comparing the calculated and measured results in terms of solids flow rate and gas pressure drop during pneumatic conveying with a pipeline inclination angle varying from 0? to 90?. On this basis, the effects of inclination angle, solids flow rate, and gas velocity on gas pressure are quantified. The contributions of different forces including the particle-wall friction force, particle gravitational force, and fluid-wall friction force to the pressure drop are examined. Finally, the energy dissipation as a result of interactions between particles, between particles and wall, between particles and fluid, between fluids, and between fluid and wall is studied in detail. The results show that the energy loss during steady-state inclined pneumatic conveying can mainly be attributed to particle-fluid energy dissipation, gravitational potential energy, particle-wall friction energy dissipation, and fluid-wall viscous energy dissipation. These energy dissipations vary significantly with inclination angle and flow regime.",
author = "Shibo Kuang and Ruiping Zou and Renhu Pan and Aibing Yu",
year = "2012",
doi = "10.1021/ie301894d",
language = "English",
volume = "51",
pages = "14289 -- 14302",
journal = "Industrial and Engineering Chemistry Research",
issn = "0888-5885",
number = "43",

}

Gas-solid flow and energy dissipation in inclined pneumatic conveying. / Kuang, Shibo; Zou, Ruiping; Pan, Renhu; Yu, Aibing.

In: Industrial and Engineering Chemistry Research, Vol. 51, No. 43, 2012, p. 14289 - 14302.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Gas-solid flow and energy dissipation in inclined pneumatic conveying

AU - Kuang, Shibo

AU - Zou, Ruiping

AU - Pan, Renhu

AU - Yu, Aibing

PY - 2012

Y1 - 2012

N2 - This article presents a numerical study of inclined pneumatic conveying using the combination of the discrete element model (DEM) for the particles and computational fluid dynamics (CFD) for the gas. In the numerical model, periodic boundary conditions (PBCs) are applied to both gas and particles in the conveying direction for computational efficiency. The validity of the model is first examined by comparing the calculated and measured results in terms of solids flow rate and gas pressure drop during pneumatic conveying with a pipeline inclination angle varying from 0? to 90?. On this basis, the effects of inclination angle, solids flow rate, and gas velocity on gas pressure are quantified. The contributions of different forces including the particle-wall friction force, particle gravitational force, and fluid-wall friction force to the pressure drop are examined. Finally, the energy dissipation as a result of interactions between particles, between particles and wall, between particles and fluid, between fluids, and between fluid and wall is studied in detail. The results show that the energy loss during steady-state inclined pneumatic conveying can mainly be attributed to particle-fluid energy dissipation, gravitational potential energy, particle-wall friction energy dissipation, and fluid-wall viscous energy dissipation. These energy dissipations vary significantly with inclination angle and flow regime.

AB - This article presents a numerical study of inclined pneumatic conveying using the combination of the discrete element model (DEM) for the particles and computational fluid dynamics (CFD) for the gas. In the numerical model, periodic boundary conditions (PBCs) are applied to both gas and particles in the conveying direction for computational efficiency. The validity of the model is first examined by comparing the calculated and measured results in terms of solids flow rate and gas pressure drop during pneumatic conveying with a pipeline inclination angle varying from 0? to 90?. On this basis, the effects of inclination angle, solids flow rate, and gas velocity on gas pressure are quantified. The contributions of different forces including the particle-wall friction force, particle gravitational force, and fluid-wall friction force to the pressure drop are examined. Finally, the energy dissipation as a result of interactions between particles, between particles and wall, between particles and fluid, between fluids, and between fluid and wall is studied in detail. The results show that the energy loss during steady-state inclined pneumatic conveying can mainly be attributed to particle-fluid energy dissipation, gravitational potential energy, particle-wall friction energy dissipation, and fluid-wall viscous energy dissipation. These energy dissipations vary significantly with inclination angle and flow regime.

UR - http://pubs.acs.org.ezproxy.lib.monash.edu.au/doi/pdf/10.1021/ie301894d

U2 - 10.1021/ie301894d

DO - 10.1021/ie301894d

M3 - Article

VL - 51

SP - 14289

EP - 14302

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

SN - 0888-5885

IS - 43

ER -