CFD-DEM Modeling and Correlation Analysis between Flow Behaviors and Heat Transfer Characteristics of Bidispersed Particles in a Spouted Pulsed Fluidized Bed

IF 3.8 3区工程技术 Q2 ENGINEERING, CHEMICAL

Industrial & Engineering Chemistry Research Pub Date : 2025-01-10 DOI:10.1021/acs.iecr.4c03153

Binhui Qian, Junyuan Luan, Xiaoou Cui, Donghui Li, Luchang Han, Yefeng Zhou

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Abstract

In this work, the CFD-DEM method is applied to establish a spouted pulsed fluidized bed (SPFB) model, which can enhance the heat and mass transfer by eliminating the dead zones. The effects of the frequency and amplitude of the auxiliary pulsed flow on the gas–solid flow, particle mixing, and heat transfer characteristics as well as the mutual correlation analysis are investigated. The results show that the mixing rate and average Lacey index of bidispersed particles first increase and then decrease with the increase of pulsed flow frequency or amplitude. Based on the comprehensive analysis of flow and heat transfer characteristics, it is determined that the optimal pulse flow condition is frequency 6 Hz and amplitude 1.2 m/s. The convection heat transfer and radiation heat transfer rates increased by 4.8% and 9.2%, respectively, compared with that under continuous flow. The results can provide effective theoretical guidance for the design and optimization of the SPFB.

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来源期刊

Industrial & Engineering Chemistry Research 工程技术-工程：化工

CiteScore

7.40

自引率

7.10%

发文量

1467

审稿时长

2.8 months

期刊介绍： ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.