Investigation of erosion behaviors of sulfur-particle-laden gas flow in an elbow via a CFD-DEM coupling method

Zeng, Dezhi; Zhang, Enbo; Ding, Yawen; Yi, Yaolin; Xian, Qibiao; Yao, Guangju; Zhu, Hongjun; Shi, Tao

doi:10.1016/j.powtec.2018.01.056

Cited by 83 publications

(28 citation statements)

References 44 publications

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“…Collisions between particles can be illustrated using the soft-sphere model of Zeng [22]. As shown in figure 5 a , in a soft-sphere model, a particle is affected by fluid contact with particle j at point C. These two particles are deformed in subsequent movements.…”

Section: Numerical Simulation Methodsmentioning

confidence: 99%

Relationship between wear formation and large-particle motion in a pipe bend

Zhang

Lin

et al. 2019

R. Soc. open sci.

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Fine and large particles flowing through a bend in a pipe move differently and therefore erode the pipe differently. This paper simulates solid–liquid two-phase flow containing large particles in a bend and analyses the relationship between the wear formation and particle motion. Wear experiments are carried out using 3-mm glass bead particles at a mass concentration of 1–15%. At the same time, the flow field and the motion of the granular system are obtained in computational fluid dynamics–discrete element method simulation. The wear formation mechanism is revealed by comparing experiments with numerical simulations. The wear rate of the wall surface increases with the mass concentration, while the marginal growth rate decreases as the mass concentration increases. As the mass concentration increases to a certain value, the degree of wear reaches a maximum and remains unchanged subsequently because of the formation of a particle barrier along the bend wall. The particles near the wall region will bounce forward because of the periodic disturbance flow around particles. The impact of mass bouncing particles causes the formation of the erosion ripple on the test sheet.

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Section: Numerical Simulation Methodsmentioning

confidence: 99%

Relationship between wear formation and large-particle motion in a pipe bend

Zhang

Lin

et al. 2019

R. Soc. open sci.

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“…Pei et al simulated the erosion in pipe elbows and have given the position of maximum erosion; the abrasive terms in erosion simulation are proved necessary, and the particle impact angles are generally low in transportation of dense gas . Peng et al studied the particle trajectories in erosion simulation by combining eight erosion models and two rebound models, and have found the prediction of the maximum erosion zone in this paper; Laín et al studied the bend erosion with the approach of Euler/Lagrange and found that the roughness of wall can reduce the penetration ratio; Zeng et al used the CFD‐DEM coupling way to study the motion of sulfur particles in the gas flow; Liu et al used CFD to study the diffusion rule of two different oils in tee pipe; Duarte et al studied the relationship between collision of interparticles and the elbow erosion with the numerical simulation; Vieira et al combined the PIV technique and the sand erosion experiment, then simulated the erosion and gave the prediction of erosion; in the study of Duarte et al the particle erosion in the pipe elbow was investigated, and the conclusion indicated that the collision of inner particles can effectively reduce the erosion in the elbow.…”

Section: Introductionmentioning

confidence: 94%

Numerical analysis of particle erosion in the rectifying plate system during shale gas extraction

Peng

Chen

Shan³

et al. 2019

Energy Science & Engineering

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Erosion caused by sand particles in the pipe system is a major concern in the shale gas industry. In the rectifying plate system, the fluid with high Reynolds number is assumed to be the fully turbulent flow. To investigate particle erosion under the complex flow in the rectifying plate system, various erosion simulations are conducted in this study. Because the gas velocity, sand input, particles size, and particles shape can affect the erosion in rectifying system, the effect of gas velocities (5‐30 m/s), sand inputs (50‐400 kg/d), and particle parameters (various particle sizes and various particle shapes) on erosion is simulated. Moreover, the erosion experiment conducted in Tulsa University is used to verify the accuracy of simulation model. Through the calculation and analysis, it is obtained that different gas velocities will change the position where the max erosion rate appears. Various sand inputs lead to different max erosion rates. In addition, the effect of sand input on the distribution of erosion scars on rectifying plate is more obvious than that of on elbows. Finally, the effect of size and shape of particles on erosion is investigated. It is found that with the increase in particle diameter, the shape of erosion scar on elbow 1 changes gradually from an ellipse to the V‐shape.

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“…The particle–particle and particle–wall interactions were considered in the DEM method. The soft-ball model was used for the particle contact model, 19 and the model proposed by Archard for particle wear on the wall surface is as follows 20…”

Section: Centrifugal Pump Computational Studymentioning

confidence: 99%

Centrifugal pump wear for solid–liquid two-phase flows based on computational fluid dynamics–discrete element method coupling

Zeng

et al. 2020

Advances in Mechanical Engineering

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In the conveying process of a solid–liquid two-phase medium, the wear of the flow passage components is unavoidable. In this study, the solid–liquid two-phase flow in a centrifugal pump was numerically simulated by computational fluid dynamics–discrete element method coupling. For particle diameters up to 3 mm, the particle–particle and particle–wall interactions were considered in the simulation. Two-phase performance and wear experiments for different flow rates and particle concentrations were conducted. The wear experiment was carried out for 48 h at each mass concentration. In these experiments, a paint film method was used to display the wear position, and the wall thickness of the flow passage was measured using an ultrasonic thickness gauge. The results show that the instantaneous wear rate of the impeller, volute, and wear plate in the pump changed periodically with the impeller rotation. The volute wall wear was related to the particle movement. With the increase in the particle mass concentration, the wear rate increased. However, the rate of increase of the wear rate decreased because the particles moved to the wall in the volute to form a particle layer. Increasing the concentration did not linearly increase the effect of the particles on the wall.

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Investigation of erosion behaviors of sulfur-particle-laden gas flow in an elbow via a CFD-DEM coupling method

Cited by 83 publications

References 44 publications

Relationship between wear formation and large-particle motion in a pipe bend

Relationship between wear formation and large-particle motion in a pipe bend

Numerical analysis of particle erosion in the rectifying plate system during shale gas extraction

Centrifugal pump wear for solid–liquid two-phase flows based on computational fluid dynamics–discrete element method coupling

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