DEM study of the porosity distribution of pellet sandpile formed by ternary size particles

Han Wei, Yao Ge, Meng Li, Ying Li, Henrik Saxén, Zhijun He, Yaowei Yu*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)
35 Downloads (Pure)


Porosity is an important parameter to reflect the internal structure of the heap, and it is related to the permeability of a packed bed. Thus, understanding and further adjusting the porosity distribution will help to control the gas-solid reaction in a chemical reactor. In this work, sandpiles formed by ternary size particles with variable mass ratio were researched by discrete element method. The porosity increases with the increase of the mass fraction of small particles. Different dump methods (Drop Test and Chute Test) both cause four distinct porosity regions (Zone A, B, C and D), but the locations are not the same. Changing the drop height in Drop Test and chute properties in Chute Test both have influence on the porosity zone, especially for the upper porosity. Furthermore, size segregation will lead to uneven porosity distribution, but there is no evident relationship between porosity and size segregation in sandpile.
Original languageEnglish
Pages (from-to)1337-1347
Number of pages11
JournalPowder Technology
Publication statusPublished - 15 Jan 2020
MoE publication typeA1 Journal article-refereed


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