Normal collision between partially wetted particles by using direct numerical simulation

Shao, Lipei; Liu, Daoyin; Ma, Jiliang

doi:10.1016/j.ces.2021.117090

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…20 DNS has the highest accuracy but also requires the largest amount of computation. 21 The TFM requires the lowest computational requirement by viewing the particle phase as a pseudofluid with continuous medium characteristics but cannot obtain enough particle-level information. 22 By applying the CFD−DEM method, more complete information on the gas− solid two phase can be obtained with less calculation.…”

Section: Introductionmentioning

confidence: 99%

“…Commonly used numerical simulation methods include direct numerical simulation (DNS), the computational fluid dynamics–discrete element model (CFD–DEM), and the two-fluid model (TFM) . DNS has the highest accuracy but also requires the largest amount of computation . The TFM requires the lowest computational requirement by viewing the particle phase as a pseudofluid with continuous medium characteristics but cannot obtain enough particle-level information .…”

Section: Introductionmentioning

confidence: 99%

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Quantitative Correlation Analysis of Mixing and Circulation Characteristics in a Liquid-Containing Gas–Solid Fluidized Bed Reactor under Coupled Effects of Multiple Parameters

Luan,

Feng,

Han

et al. 2024

Ind. Eng. Chem. Res.

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Liquid addition complicates the particle mixing and circulation characteristics within the liquid-containing gas−solid fluidized bed reactor, which significantly affects heat-mass transfer and chemical reaction processes and deserves an in-depth study. This work utilizes the CFD−DEM method to investigate the effects of liquid property parameters on the mixing and circulation characteristics of liquid-containing particles. Both the comprehensive effects of multiple parameters and the interactive effects among them have been considered. A heat map is used to visualize the time-averaged Lacey index for quantitative analysis. Then, the mixing and circulation mechanism in the liquid-containing particle fluidization system is proposed based on the above analysis. Changes in liquid property parameters alter particle velocity, thereby affecting convective and shear mixing and ultimately leading to significant differences in the mixing and circulation characteristics. Compared with other parameters, surface tension plays a more important role in determining the mixing and circulation characteristics. Only under higher surface tensions, liquid viscosity and liquid content show significant effects on the above characteristics. A comprehensive investigation into the mixing and circulation characteristics of the liquid-containing particle fluidization system and the elucidation of its mechanisms are essential for achieving stable fluidization within the liquid-containing gas−solid fluidized bed reactor.

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Section: Introductionmentioning

confidence: 99%