Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 339 - 352 |
| Number of pages | 14 |
| Journal | Chemical Engineering Journal |
| Volume | 278 |
| DOIs | |
| Publication status | Published - 2015 |
Cite this
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Discrete particle simulation of solid flow in a three-dimensional blast furnace sector model. / Yang, W.J.; Zhou, Zongyan; Yu, Aibing.
In: Chemical Engineering Journal, Vol. 278, 2015, p. 339 - 352.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Discrete particle simulation of solid flow in a three-dimensional blast furnace sector model
AU - Yang, W.J.
AU - Zhou, Zongyan
AU - Yu, Aibing
PY - 2015
Y1 - 2015
N2 - The application of the discrete element method (DEM) to industry processes often encounters difficulties because of the high computational demand. Two-dimensional slot models are often a preferable solution to reduce the demand; however it may experience significant deviations from the reality. The sector model with circumferential periodic boundary conditions is an alternative tool to solve this problem, and has been established in our previous work. In this work, such a sector model is used to examine the solid flow features in an ironmaking blast furnace, and the results are compared with those obtained from the corresponding slot model. Several significant differences of solid flow can be observed between the two models, such as the larger stagnant zone and quasi-stagnant zone, smaller funnel zones in the slot model and different layer shapes. The solid flow with the pre-set cohesive zone also confirms that the slot model is not accurate to describe the anisotropic features of solid flow in the tangential direction in a cylinder vessel. The gas flow in the raceway region also shows a slight difference between the two models. It has demonstrated that to realistically describe the three-dimensional solid flow characteristics, the sector model should be used in the future studies of multiphase flow in a blast furnace.
AB - The application of the discrete element method (DEM) to industry processes often encounters difficulties because of the high computational demand. Two-dimensional slot models are often a preferable solution to reduce the demand; however it may experience significant deviations from the reality. The sector model with circumferential periodic boundary conditions is an alternative tool to solve this problem, and has been established in our previous work. In this work, such a sector model is used to examine the solid flow features in an ironmaking blast furnace, and the results are compared with those obtained from the corresponding slot model. Several significant differences of solid flow can be observed between the two models, such as the larger stagnant zone and quasi-stagnant zone, smaller funnel zones in the slot model and different layer shapes. The solid flow with the pre-set cohesive zone also confirms that the slot model is not accurate to describe the anisotropic features of solid flow in the tangential direction in a cylinder vessel. The gas flow in the raceway region also shows a slight difference between the two models. It has demonstrated that to realistically describe the three-dimensional solid flow characteristics, the sector model should be used in the future studies of multiphase flow in a blast furnace.
UR - http://goo.gl/brIykG
U2 - 10.1016/j.cej.2014.11.144
DO - 10.1016/j.cej.2014.11.144
M3 - Article
VL - 278
SP - 339
EP - 352
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -