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DEM study of the angle of repose and porosity distribution of cylindrical particles with different lengths

  • Heng Zhou , Xu Tian EMAIL logo , Xingyu Guo , Mingyin Kou , Shengli Wu , Yansong Shen and Yang You EMAIL logo
Published/Copyright: September 7, 2021
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International Journal of Chemical Reactor Engineering
From the journal International Journal of Chemical Reactor Engineering Volume 20 Issue 2

Abstract

Effect of the length of cylindrical particle on repose angle and porosity of a pile was numerically studied using discrete element method. The variation of repose angle and porosity with coefficient of sliding and rolling friction were also discussed. The results shown that compared with sphere particle, the bottom size of cylindrical pile is smaller, while the height of cylinder pile is larger and the heap is steeper. With the increase of the length of cylinder, the contour line of the pile becomes steep, and the angle of repose increases. The repose angle shows a positive correlation with coefficient of sliding and rolling friction. The porosity increases with the increase of the length of cylinders. The trends of porosity are basically consist with that of repose angle, and with increase of friction coefficient, the average porosity increases.

Keywords: cylindrical particle; DEM; different lengths; porosity distribution; repose angle
Corresponding authors: Xu Tian, State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China, E-mail: ; and Yang You, College of materials Science and Engineering, Chongqing University, Shapingba District, Chongqing, 400044, China, E-mail:

Funding source: National Natural Science Foundation of China 10.13039/501100001809

Award Identifier / Grant number: 51904023, 51804027

Funding source: Fundamental Research Funds for the Central Universities 10.13039/501100012226

Award Identifier / Grant number: QNXM20210011

Funding source: State Key Laboratory of Advanced Metallurgy 10.13039/501100015959

Award Identifier / Grant number: KF20-07

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: The authors would like to thank the National Natural Science Foundation of China (Grant Number: 51904023, 51804027), the Fundamental Research Funds for the Central Universities (Grant Number: QNXM20210011) and the project of State Key Laboratory of Advanced Metallurgy (KF20-07) for their financial supports.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-07-03
Accepted: 2021-08-31
Published Online: 2021-09-07

© 2021 Walter de Gruyter GmbH, Berlin/Boston

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https://doi.org/10.1515/ijcre-2021-0174
Keywords for this article
cylindrical particle; DEM; different lengths; porosity distribution; repose angle

Articles in the same Issue

  1. Frontmatter
  2. Articles
  3. CFD research on the influence of geometry characteristic on flow pattern and the transition mechanism in Rushton turbine stirred vessels
  4. Insight on micro bubbling mechanism in a 2D fluidized bed with Group D particles
  5. Parametric optimization of a coiled agitated vessel with TiO2/water nanofluid
  6. Highly efficient photo-degradation of cetirizine antihistamine with TiO2-SiO2 photocatalyst under ultraviolet irradiation
  7. DEM study of the angle of repose and porosity distribution of cylindrical particles with different lengths
  8. Analysis of flow pattern characteristics and strengthening mechanism of co-rotating and counter-rotating mixing with double impellers on different string shafts
  9. Comprehensive evaluation of the blast furnace status based on data mining and mechanism analysis
  10. Performance enhancement of commercial ethylene oxide reactor by artificial intelligence approach
  11. Study of catalytic hydrogenation performance for the Pd/CeO2 catalysts
  12. Performance of flow distribution in a microchannel parallel flow gas cooler with stepped protrusion depth header
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