Measuring Binary Fluidization of Non‐spherical and Spherical Particles Using Machine Learning Aided Image Processing

Cheng Li*, Xi Gao*, Steven L. Rowan, Bryan Hughes, William A. Rogers

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The binary fluidization of Geldart D type nonspherical wood particles and spherical low density polyethylene (LDPE) particles was investigated in a laboratory-scale bed. The experiment was performed for varying static bed height, wood particles count, as well as superficial gas velocity. The LDPE velocity field were quantified using particle image velocimetry (PIV). The wood particles orientation and velocity are measured using particle tracking velocimetry (PTV). A machine learning pixel-wise classification model was trained and applied to acquire wood and LDPE particle masks for PIV and PTV processing, respectively. The results show significant differences in the fluidization behavior between LDPE only case and binary fluidization case. The effects of wood particles on the slugging frequency, mean, and variation of bed height, and characteristics of the particle velocities/orientations were quantified and compared. This comprehensive experimental dataset serves as a benchmark for validating numerical models. © 2022 American Institute of Chemical Engineers.
Original languageEnglish
JournalAICHE Journal
DOIs
StateE-pub ahead of print - 13 Mar 2022

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