Journal
POWDER TECHNOLOGY
Volume 363, Issue -, Pages 745-756Publisher
ELSEVIER
DOI: 10.1016/j.powtec.2020.01.016
Keywords
Pulsed fluidized bed; CFO-OEM; Regime transition; Pulsation parameters; Regular bubble patterns
Categories
Funding
- Brazil ScienceWithout Borders program [99999.013288/2013-00]
- Cain Chair program at LSU
Ask authors/readers for more resources
Computational Fluid Dynamics and Discrete Element Method are used to study the dynamics of a pseudo -2D pulsed fluidized bed, consisting of Geldart B particles. The focus is on the response of the system to variations in the mean gas velocity, V4, and the amplitude of oscillations, VA, at an imposed frequency of 3.5 Hz. Distinctive flow patterns are mapped out based on observation of simulations, pressure fluctuations and bubble granular temperature profiles. A regime transition is observed when VA is varied under constant f'm. Such transition is underlined by: a peak in time-averaged pressure drop and coordination number; a change in the dynamics of the solid phase; an increase in velocity of the void fronts traversing the particle bed; and a decrease in minimum average height attained by the solid phase. This is related to the suppression of void layers at higher vn, occurring more easily at lower Vm. 2020 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available