Modeling partition coefficient of liquid droplets impacting on particles by direct numerical simulation

Wang, Jiayi; Hua, Leina; Yang, Ning

doi:10.1016/j.ces.2022.117553

Cited by 5 publications

(4 citation statements)

References 33 publications

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“…16,17 Many scholars have adopted numerical simulation methods for in-depth research on liquid-containing gas−solid fluidized bed reactors. Commonly used numerical simulation methods include direct numerical simulation (DNS), 18 the computational fluid dynamics−discrete element model (CFD−DEM), 19 and the two-fluid model (TFM). 20 DNS has the highest accuracy but also requires the largest amount of computation.…”

Section: Introductionmentioning

confidence: 99%

“…Particularly, under harsh conditions such as high temperature, high pressure, and multiphase flows, where the accuracy and resolution of sensors will be affected, it is unable to provide detailed local flow information. , Numerical simulation can not only accurately capture the characteristics of local instantaneous flow within the reactor but also provide the data with high spatial and temporal resolution, as well as get more detailed microscale and mesoscale information. , Many scholars have adopted numerical simulation methods for in-depth research on liquid-containing gas–solid fluidized bed reactors. 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 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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%

Section: Introductionmentioning

confidence: 99%

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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“…Gas–solid fluidization with liquid injection is often referred to as “wet fluidization.” 9 Compared with the fluidization of dry particles, wet fluidization presents more complex hydrodynamics. In microscale, liquid bridges form between particles and spread via particles contact 10,11 . Herminghaus et al 12 investigated the effect of liquid content on the morphology of liquid bridge in wet granular matter, and distinguished four regimes of liquid bridge, namely, humidity, pendular, funicular and bubble regime.…”

Section: Introductionmentioning

confidence: 99%

“…In microscale, liquid bridges form between particles and spread via particles contact. 10,11 Herminghaus et al 12 investigated the effect of liquid content on the morphology of liquid bridge in wet granular matter, and distinguished four regimes of liquid bridge, namely, humidity, pendular, funicular and bubble regime. In the mesoscale, liquid-bridge force inhibits the movement of particles and promotes the formation of particle agglomerates.…”

Section: Introductionmentioning

confidence: 99%

Characterizing bubble behavior in a pseudo‐2D fluidized bed of wet particles

Xu,

Guan,

Ocone

et al. 2023

AIChE Journal

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By applying digital image analysis on the bubble characteristics in a two dimensional wet‐particle fluidized‐bed, we report two‐stage evolution of bubble characteristics with increasing liquid content. In the first stage, bubble number and uniformity of bubble fraction increase, while bubble average diameter and aspect ratio decrease. In the second stage, these characteristics shift toward an opposite direction. This two‐stage evolution of bubble characteristics are analogous to that of reducing particle size in dry‐particle fluidization, and the fluidizing properties of particles shifts from Geldart Group B to Group A and then to Group C. Furthermore, liquid addition causes a continuous decrease of bubble fraction and bubble flow rate. This is different from dry‐particle fluidization, in which reducing particle size causes an increase trend. An explanation for this difference is that liquid addition increases the equivalent size of agglomerates in wet‐particle fluidization, which is opposite to the effect of reducing particle size.

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A micro-investigation on water bridge effects for unsaturated granular materials with constant water content by discrete element method

Luan

Gao

et al. 2023

Particuology

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Modeling partition coefficient of liquid droplets impacting on particles by direct numerical simulation

Cited by 5 publications

References 33 publications

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

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

Characterizing bubble behavior in a pseudo‐2D fluidized bed of wet particles

A micro-investigation on water bridge effects for unsaturated granular materials with constant water content by discrete element method

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