A deterministic breakup model for Euler–Lagrange simulations of turbulent microbubble-laden flows

Hoppe, F.; Breuer, M.

doi:10.1016/j.ijmultiphaseflow.2019.103119

Cited by 14 publications

(12 citation statements)

References 85 publications

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“…This study involves gas phase (air) and solid phase (projectile and waste). Euler-Lagrange method 42 is used to solve the flow field. The Navier Stokes equation of incompressible viscous fluid 43 is solved in Euler coordinate system.…”

Section: Physical Model and Numerical Simulation Methodsmentioning

confidence: 99%

Analysis of gas-solid two-phase flow characteristics of mobile shot blasting machine recovery device based on CFD-DEM

Zhang

Men

Wang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The shot blasting machine recovery device is an important part of the operation of the shot blasting machine to recover solid particles and reduce environmental pollution. The recovery efficiency of solid particles has an important influence on their processing efficiency and service life. The computational fluid dynamics and discrete element method (CFD-DEM) simulation method is applied to study the gas-solid two-phase flow characteristics and solid particle recovery efficiency of shot pellet recovery unit. The results show that the simulation results of outlet and inlet wind speeds and pressures are in good agreement with the experimental data, which verifies the accuracy of the simulation model. The existence of particle phase divides the recovery pipeline into inner high-speed flow area and outer low-speed flow area, which has little influence on the air flow distribution inside the recovery bin. The results of solid particle recovery efficiency show that with the increase of incident angle, the recovery efficiency of waste particles and shot particles first decreases and then increases, and the recovery efficiency is the lowest when the incident angle is 30°. With the increase of particle formation rate, the efficiency of shot recovery first increases and then decreases. When the particle formation rate is 2000 n/s, the efficiency of shot recovery is the highest, which has little influence on the efficiency of waste recovery.

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Section: Physical Model and Numerical Simulation Methodsmentioning

confidence: 99%

Analysis of gas-solid two-phase flow characteristics of mobile shot blasting machine recovery device based on CFD-DEM

Zhang

Men

Wang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Various daughter bubble size distributions (uniform, normal, U-shape and M-shape) have been presented in the literature. In a recent study, Hoppe & Breuer (2020) derived a relation for the critical based on the break-up volume fraction, given as where denotes the diameter of the small daughter bubble. The ratio has a minimum value of for a break-up into two equally-sized daughter bubbles.…”

Section: Numerical Modelsmentioning

confidence: 99%

Numerical simulation and analysis of multi-scale cavitating flows

2021

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“…In general, computational uid dynamics methods and computational uid dynamics-discrete element methods [30] are the main methods for simulating gas-solid two-phase ows in pipes and enclosed devices [31,32]. Their reliability has been veri ed by a large number of experiments.…”

Section: Introductionmentioning

confidence: 99%

Analysis of gas-solid two-phase flow and structure optimization of mobile shot blasting machine recovery device

Zhang

Men

Pan

et al. 2022

Preprint

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Purpose: To address the problem of low efficiency of recycling process waste by gas-solid two-phase flow of the shot blasting machine recycling device, a method and structure by increasing the negative pressure value and optimizing the outlet pipe position are proposed. Methods: Computational fluid dynamics (CFD), discrete element method (DEM) and discrete phase model (DPM) were used to study the waste recovery efficiency at different pressure outlet conditions and outlet pipe locations. The validity of the model was verified by velocity tests at the outlet and inlet compared with simulations. The effect of particle size and particle generation rate on solid particle recovery efficiency was further investigated by analyzing the flow field distribution of the recovery unit. The results show that: the maximum velocity of the gas phase in the recovery device increases with the increase of the absolute value of the outlet pressure, when the outlet pressure is -6500 Pa, the maximum velocity is 67.59 m/s. When the absolute value of the outlet pressure is greater than 6000 Pa, a small amount of steel shot particles is discharged from the recovery bin under the action of the outlet pressure, resulting in the loss of steel shot particles. After the outlet pipe position optimization, the steel shot particle recovery efficiency increased by 10% and the waste particle recovery efficiency increased by 18.9%.

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A deterministic breakup model for Euler–Lagrange simulations of turbulent microbubble-laden flows

Cited by 14 publications

References 85 publications

Analysis of gas-solid two-phase flow characteristics of mobile shot blasting machine recovery device based on CFD-DEM

Analysis of gas-solid two-phase flow characteristics of mobile shot blasting machine recovery device based on CFD-DEM

Numerical simulation and analysis of multi-scale cavitating flows

Analysis of gas-solid two-phase flow and structure optimization of mobile shot blasting machine recovery device

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