CFD-DEM modelling of hydraulic conveying of solid particles in a vertical pipe

Mengmeng Zhou, Shuai Wang, Shibo Kuang, Kun Luo, Jianren Fan, Aibing Yu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This paper presents a numerical study of hydraulic conveying of coarse solid particles by means of the combined approach of Computational Fluid Dynamics (CFD) for the liquid phase and Discrete Element Method (DEM) for particles. Via the model validation, it proves the reasonability of applying the CFD-DEM method in the simulation of this flow system, where the lift force acting on a particle needs to be considered. Numerical results show that particles tend to concentrate in the middle of the vertical pipe. Increasing feed solid concentration and conveying speed gives a more dispersed distribution of particles and leads to an increase of pressure drop. In contrast, particle diameter has a negligible influence on instantaneous flow regimes and pressure drop. Under all the operating conditions considered, time-averaged variables including solid volume fraction, axial liquid velocity, and axial solid velocity all present maximum values in the middle of the pipe, which decline gradually in the radial direction toward the wall. These results are expected to shed light on the optimization of hydraulic conveying.

Original languageEnglish
Pages (from-to)893-905
Number of pages13
JournalPowder Technology
Volume354
DOIs
Publication statusPublished - 1 Sep 2019

Keywords

  • CFD-DEM
  • Conveying speed
  • Feed solid concentration
  • Hydraulic conveying
  • Pressure drop

Cite this

Zhou, Mengmeng ; Wang, Shuai ; Kuang, Shibo ; Luo, Kun ; Fan, Jianren ; Yu, Aibing. / CFD-DEM modelling of hydraulic conveying of solid particles in a vertical pipe. In: Powder Technology. 2019 ; Vol. 354. pp. 893-905.
@article{f187e9c73f6d46e6bb962e903b477a51,
title = "CFD-DEM modelling of hydraulic conveying of solid particles in a vertical pipe",
abstract = "This paper presents a numerical study of hydraulic conveying of coarse solid particles by means of the combined approach of Computational Fluid Dynamics (CFD) for the liquid phase and Discrete Element Method (DEM) for particles. Via the model validation, it proves the reasonability of applying the CFD-DEM method in the simulation of this flow system, where the lift force acting on a particle needs to be considered. Numerical results show that particles tend to concentrate in the middle of the vertical pipe. Increasing feed solid concentration and conveying speed gives a more dispersed distribution of particles and leads to an increase of pressure drop. In contrast, particle diameter has a negligible influence on instantaneous flow regimes and pressure drop. Under all the operating conditions considered, time-averaged variables including solid volume fraction, axial liquid velocity, and axial solid velocity all present maximum values in the middle of the pipe, which decline gradually in the radial direction toward the wall. These results are expected to shed light on the optimization of hydraulic conveying.",
keywords = "CFD-DEM, Conveying speed, Feed solid concentration, Hydraulic conveying, Pressure drop",
author = "Mengmeng Zhou and Shuai Wang and Shibo Kuang and Kun Luo and Jianren Fan and Aibing Yu",
year = "2019",
month = "9",
day = "1",
doi = "10.1016/j.powtec.2019.07.015",
language = "English",
volume = "354",
pages = "893--905",
journal = "Powder Technology",
issn = "0032-5910",
publisher = "Elsevier",

}

CFD-DEM modelling of hydraulic conveying of solid particles in a vertical pipe. / Zhou, Mengmeng; Wang, Shuai; Kuang, Shibo; Luo, Kun; Fan, Jianren; Yu, Aibing.

In: Powder Technology, Vol. 354, 01.09.2019, p. 893-905.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - CFD-DEM modelling of hydraulic conveying of solid particles in a vertical pipe

AU - Zhou, Mengmeng

AU - Wang, Shuai

AU - Kuang, Shibo

AU - Luo, Kun

AU - Fan, Jianren

AU - Yu, Aibing

PY - 2019/9/1

Y1 - 2019/9/1

N2 - This paper presents a numerical study of hydraulic conveying of coarse solid particles by means of the combined approach of Computational Fluid Dynamics (CFD) for the liquid phase and Discrete Element Method (DEM) for particles. Via the model validation, it proves the reasonability of applying the CFD-DEM method in the simulation of this flow system, where the lift force acting on a particle needs to be considered. Numerical results show that particles tend to concentrate in the middle of the vertical pipe. Increasing feed solid concentration and conveying speed gives a more dispersed distribution of particles and leads to an increase of pressure drop. In contrast, particle diameter has a negligible influence on instantaneous flow regimes and pressure drop. Under all the operating conditions considered, time-averaged variables including solid volume fraction, axial liquid velocity, and axial solid velocity all present maximum values in the middle of the pipe, which decline gradually in the radial direction toward the wall. These results are expected to shed light on the optimization of hydraulic conveying.

AB - This paper presents a numerical study of hydraulic conveying of coarse solid particles by means of the combined approach of Computational Fluid Dynamics (CFD) for the liquid phase and Discrete Element Method (DEM) for particles. Via the model validation, it proves the reasonability of applying the CFD-DEM method in the simulation of this flow system, where the lift force acting on a particle needs to be considered. Numerical results show that particles tend to concentrate in the middle of the vertical pipe. Increasing feed solid concentration and conveying speed gives a more dispersed distribution of particles and leads to an increase of pressure drop. In contrast, particle diameter has a negligible influence on instantaneous flow regimes and pressure drop. Under all the operating conditions considered, time-averaged variables including solid volume fraction, axial liquid velocity, and axial solid velocity all present maximum values in the middle of the pipe, which decline gradually in the radial direction toward the wall. These results are expected to shed light on the optimization of hydraulic conveying.

KW - CFD-DEM

KW - Conveying speed

KW - Feed solid concentration

KW - Hydraulic conveying

KW - Pressure drop

UR - http://www.scopus.com/inward/record.url?scp=85068555707&partnerID=8YFLogxK

U2 - 10.1016/j.powtec.2019.07.015

DO - 10.1016/j.powtec.2019.07.015

M3 - Article

VL - 354

SP - 893

EP - 905

JO - Powder Technology

JF - Powder Technology

SN - 0032-5910

ER -