Rotation characteristic and granular temperature analysis in a bubbling fluidized bed of binary particles

Wang, Tianyu; He, Yaning; Yan, Shengnan; Kim, Dong Rip

doi:10.1016/j.partic.2014.02.011

Cited by 9 publications

(2 citation statements)

References 24 publications

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“…The distribution under liquid volume of 0.55 and 0.70% are similar. The particle granular temperature distribution of wet particles in bubbling fluidized bed is quite different from the behaviors of dry particles from our former researches on bubbling fluidized beds …”

Section: Wet Particle Behavior Analysiscontrasting

confidence: 65%

Experimental and numerical study on a bubbling fluidized bed with wet particles

Wang

Tang

et al. 2016

AIChE Journal

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As liquid bridge between particles acts an important role in the particle system, it is of considerable significance to analyze the flow hydrodynamics of wet particles in fluidized beds, which will improve the reactor design and process optimization. Thus, experimental and numerical investigations on wet particles in a bubbling fluidized bed are conducted in current work. On experimental side, particle image velocimetry (PIV) technology is employed with a designed bubbling fluidized bed. The silicone oil is used in this work because it is nonvolatile and transparent. On numerical side, a modified discrete element method (DEM) numerical method is developed by compositing an additional liquid‐bridge module into the traditional soft‐sphere interaction model. Most of the physical parameters are chosen to correspond to the experimental settings. Good agreements of particle velocity are found between the DEM simulation and PIV measurement. The performance of different liquid contents and superficial gas velocities are examined. © 2016 American Institute of Chemical Engineers AIChE J, 62: 1970–1985, 2016

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Section: Wet Particle Behavior Analysiscontrasting

confidence: 65%

Experimental and numerical study on a bubbling fluidized bed with wet particles

Wang

Tang

et al. 2016

AIChE Journal

Self Cite

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“…In Equations ( 1) and ( 2), the variable u represents gas velocity and ρ represents the density of the gas phase. The acceleration caused by gravity is denoted as g. p and τ are the static pressure and stress tensor of carrier phases, respectively [18]. S p stands for the interaction of particles on fluids.…”

Section: Governing Equations Of Continuous Phasesmentioning

confidence: 99%

A Preliminary Numerical Study on the Performance of Cyclone Separators in Supercritical CO2 Solar Power Plants

Li,

Zhu,

Liu

et al. 2023

Processes

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A combined approach of computational fluid dynamics, the discrete phase model, and the wall erosion model was used to numerically investigate the hydrodynamics, separation efficiency, and erosion rate in cyclone separators for s-CO2 solar power plants. Moreover, the results were compared with those for air and CO2 as carrier phases. The experimental data from the literature were used to validate the numerical model, and it was observed that the simulated gas velocities and wall erosion rate accurately aligned with the experimental measurements. The numerical results reveal that s-CO2 had the largest tangential velocity compared to the other two media; its area-weighted axial velocity of upward flow was the lowest in the middle part of the cyclone body, and varied considerably in the bottom region of the conical section. The particles were all collected at the bottom surface of air and CO2, but the separation efficiency of s-CO2 was 81.51%, due to the poor distribution of the vortex and short circuit. Finally, the erosion rate distribution and averaged surface erosion rate were also analyzed for the three carrier phases.

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Multi-Scale Numerical Simulation of Flow, Heat and Mass Transfer Behaviors in Dense Gas-Solid Flows: A Brief Review

Ren

Tang

et al. 2022

J. Therm. Sci.

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Rotation characteristic and granular temperature analysis in a bubbling fluidized bed of binary particles

Cited by 9 publications

References 24 publications

Experimental and numerical study on a bubbling fluidized bed with wet particles

Experimental and numerical study on a bubbling fluidized bed with wet particles

A Preliminary Numerical Study on the Performance of Cyclone Separators in Supercritical CO2 Solar Power Plants

Multi-Scale Numerical Simulation of Flow, Heat and Mass Transfer Behaviors in Dense Gas-Solid Flows: A Brief Review

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