Journal
POWDER TECHNOLOGY
Volume 401, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.powtec.2022.117328
Keywords
Swirling flow; Flow regimes; Choking velocity; Swirling decay
Categories
Funding
- National Natural Science Foundation of China [52005430]
- Natural Science Foundation of Hebei Province [E2021203108]
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In this study, a swirling generator was designed to investigate the effect of the swirling flow on the flow regimes of pebble particles in a vertical pipe. The results indicated that the swirling flow has a significant effect on the particle flow regimes in a vertical pipe, reducing pressure drop and increasing particle fluidization.
Particle fluidization is crucial for pneumatic conveying, combustion, and material drying. In this study, a swirling generator was designed to investigate the effect of the swirling flow on the flow regimes of pebble particles in a vertical pipe, and four different sizes of pebble particles were experimentally evaluated. Experiments were per -formed to investigate the effect of the axial flow and swirling flow on the flow regime, pressure drop, and suspen-sion height of particles in a vertical pipe. The results indicated that the swirling flow has a significant effect on the particle flow regimes in a vertical pipe when the solid mass flow rate and inlet airflow velocity are constant. The swirling flow reduces the pressure drop and increases the particle fluidization in a vertical pipe, and it lifts the particles only when the inlet airflow velocity is higher than the particle velocity for the choking condition.(c) 2022 Elsevier B.V. All rights reserved.
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