Liquid–solid two-phase jet in a turbulent crossflow: Experiments and simulations

Octau, C.; Dbouk, T.; Watremez, Michel; Méresse, Damien; Lippert, Marc; Schiffler, Jesse; Keirsbulck, Laurent; Dubar, Laurent

doi:10.1016/j.cherd.2020.01.004

Cited by 9 publications

(2 citation statements)

References 30 publications

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“…The maximum intensity value of the image was considered corresponding to a volume fraction of particles. A similar methodology for the particle concentration field was used by Zhang et al [19] and Octau et al [20].…”

Section: Experimental Verificationmentioning

confidence: 99%

Hydrodynamic Characteristics of a Stirred Tank with Self‐Priming Jet Impeller

Zhang

Yuan

et al. 2023

Chem Eng & Technol

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Multiple inclined hollow pipes were combined to form a self‐priming jet (SPJ) impeller. The hydrodynamic and mixing characteristics in the tank were studied by numerical simulation. The feasibility of the numerical simulation model was verified by particle distribution experiments. The results showed that the turbulence intensity and vorticity were affected by the installation height and diameter of the impeller; the mixing performance was improved with increasing diameter and installation angle. The study on the enhanced mixing mechanism showed that the self‐priming was generated in the lower part of the impeller, the flow was accelerated in the empty pipe, and the jet was generated in the upper part of the impeller. Self‐priming and jet caused multiple axial internal circulation flows in the SPJ tank.

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Section: Experimental Verificationmentioning

confidence: 99%

Hydrodynamic Characteristics of a Stirred Tank with Self‐Priming Jet Impeller

Zhang

Yuan

et al. 2023

Chem Eng & Technol

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“…The estimated concentration of particles was obtained. A similar methodology for the particles concentration field had been used by Octau et al 35 in the case of liquid–solid two‐phase jet.…”

Section: Experimental Measurementsmentioning

confidence: 99%

Numerical simulation and instability analysis of particles in liquid–solid concave‐wall jet using DPM‐RSM

Zhang

et al. 2022

Asia-Pacific J Chem Eng

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The liquid–solid concave‐wall jet existed in the vertical cylinder separator with tangential inlet; the instability near concave‐wall was the key factor for centrifugal separation. The effects of jet flowrate and wall curvature radius on the instability of solid‐particles were explored by experiment and numerical simulation. The results showed that the separation efficiency of particles decreased with the increase of centrifugal separation factor. The liquid–solid concave‐wall jet flow in separator was unstable in this study. The decay rate of jet maximum velocity on the concave‐wall was larger than that on plane‐wall jet. The ratio of half‐width value to wall curvature radius was about 0.08 at the circumferential direction 90°, which coincided with the critical value of centrifugal instability in strongly concave‐wall jet. The pressure, velocity, and vorticity fluctuated periodically along streamwise direction in separator. The fluctuation period was linearly related to the wall curvature, and the radial range of fluctuation was only half of jet width. The paired longitudinal vortices formed along the flow direction, and the longitudinal vortices merged at length 0.74 m from the inlet cross‐section along circumferential direction. After the position of vortices merged, the particle trajectory oscillated obviously.

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Characterization of particulate matter emissions in urban train braking - An investigation of braking conditions influence on a reduced-scale device

Octau

Méresse

Watremez

et al. 2020

Environ Sci Pollut Res

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The particulate matter emissions related to the braking of railway rolling stock are investigated using a reduced scale braking device. Samples of organic materials and cast iron discs are tested for dierent nominal contact pressures and disc surface temperatures, representative of real conditions. The aim of this work is to investigate the inuence of braking conditions on the global amount of particles emitted, their distribution in number and size, and their morphological and chemical characteristics. To be representative, the tested conditions are

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Liquid–solid two-phase jet in a turbulent crossflow: Experiments and simulations

Cited by 9 publications

References 30 publications

Hydrodynamic Characteristics of a Stirred Tank with Self‐Priming Jet Impeller

Hydrodynamic Characteristics of a Stirred Tank with Self‐Priming Jet Impeller

Numerical simulation and instability analysis of particles in liquid–solid concave‐wall jet using DPM‐RSM

Characterization of particulate matter emissions in urban train braking - An investigation of braking conditions influence on a reduced-scale device

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