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 language | English |
|---|---|
| Pages (from-to) | 893-905 |
| Number of pages | 13 |
| Journal | Powder Technology |
| Volume | 354 |
| DOIs | |
| Publication status | Published - 1 Sep 2019 |
Keywords
- CFD-DEM
- Conveying speed
- Feed solid concentration
- Hydraulic conveying
- Pressure drop
Cite this
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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 journal › Article › Research › peer-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 -