Effects of particle shape and swirling intensity on elbow erosion in dilute-phase pneumatic conveying

Zhou, Jiawei; Liu, Yu; Liu, Songyong; Du, Chenglie; Li, Jianping

doi:10.1016/j.wear.2017.03.009

Cited by 60 publications

(24 citation statements)

References 39 publications

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“…The erosion ratio is the mass loss of the wall material per unit area per unit time and is calculated by computing the cumulative damage of each particle to the wall surface. 3 Researchers at the University of Tulsa E/CRC developed an empirical model to predict the erosion of curved pipes, which is considered the most classic formula for particle abrasion. [16][17][18]…”

Section: Erosion Modelmentioning

confidence: 99%

“…The erosion ratio exhibits a significant relationship with various factors such as the impact velocity, impact angle, and particle properties, etc. [1][2][3][4][5][6] Among these factors, the impact velocity and impact angle are the key factors that affect the erosion depth. Pebble particles with a size of 5 mm to 7 mm were selected as the test materials in the experiment, which were the main aggregate of tunnel shotcrete; hence, studies regarding pebble particle flow regimes is crucial.…”

Section: Test Particlesmentioning

confidence: 99%

“…The CFD-DEM coupling method is widely used when analyzing gas-solid two-phase flows and has been used in several studies to describe the particle flow characteristics in gas-solid two-phase flow, e.g., by Zhou, 3 Chu, 12 and Karimi. 15 The CFD-DEM coupling method reveals microscopic characteristics that cannot be observed through experiments, and the simulation results should agree with the experiments.…”

Section: Validation Of Simulationmentioning

confidence: 99%

“…The elbow erosion is caused by the damage of particles impacting a wall surface, primarily owing to mass loss or volume reduction caused by the tangential impact of the particles. Various factors are related to elbow erosion, including the impact angle, 1,2 impact velocity, [3][4][5][6] particle properties, [7][8][9][10][11] and geometry surface material. 12 Wang et al 1 investigated the effect of bend orientation and particle properties on petroleum pipeline erosion, furthermore, they analyzed the erosion mechanism between secondary flows and particle trajectories.…”

Section: Introductionmentioning

confidence: 99%

“…Although particle motion in an elbow can be approximated as a fluid in some cases, the flow characteristics are much more complicated than those in a straight pipe. Zhou et al 3 studied the effect of particle shape and swirling intensity on elbow erosion using the computation-fluid-dynamics-discrete-element-method (CFD-DEM) coupling method and assessed the correlation models for different sphericities and swirling numbers. Xu et al 7 used both one-way and two-way couplings to calculate how particle concentration affects erosion, and they found that the coupling mode exerted little effect on elbow erosion for a dilute flow but the particle concentration significantly affected elbow erosion.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Particle abrasion of lifting elbow in dilute pneumatic conveying

Liu

Gao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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Elbows are widely used in various industrial fields and are important for industrial applications. In this study, Eulerian coupling method was used to address the fluid-particle, and particle-particle interactions in a gas-solid two-phase flow while considering the effects of lifting angle, airflow velocity, and solid mass flow rate. The Hertz-Mindlin contact model and empirical Erosion/Corrosion Research Center erosion model were used to predict erosion in a lifting elbow, and the erosion ratio was used for validation with the experimental results. Experimental results indicated that the established model herein is accurate with different airflow velocities and lifting angles. The orthogonal design method was applied to the simulation scheme design, and range and variance analyses were used for the analysis of the results. Results indicated that the solid mass flow rate most affected elbow erosion comparing with lifting angles and airflow velocities. Additionally, the effect of the elbow lifting angle on the erosion mechanism was considered, and results indicated that the maximum erosion region is independent of the airflow velocity, lifting angle, and solid mass flow rate.

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Section: Erosion Modelmentioning

confidence: 99%