Innovative pipe wall design to mitigate elbow erosion: A CFD analysis

Duarte, Carlos Antonio Ribeiro; Souza, Francisco José de

doi:10.1016/j.wear.2017.03.015

Cited by 73 publications

(27 citation statements)

References 33 publications

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“…On the other hand, in experiment of Tulsa University, the value of the erosion rate measured is 80.3 mm/y, and the maximum value of the prediction conducted by the CFD is 8 × 10 −5 kg/m 2 s. Jie et al simulated the pipe erosion by using the same boundary condition, and the value of the maximum erosion rate is 7.92 × 10 −5 kg/m 2 s. In this paper, the max value of erosion rate is 6.31 × 10 −5 kg/m 2 s.…”

Section: Methodology and Validationmentioning

confidence: 70%

“…In studies of erosion, the CFD method helps capture particle trajectories and can calculate the erosion rate. Duarte et al used the CFD method to study the erosion and found an optimum method that using spiral internal structure can effectively reduce the erosion degree. 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 .…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Methodology and Validationmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

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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“…The transport of undesired particulates with a fluid flow occurs during a diverse array of phenomena involved in petroleum harvesting and processing and power generation plants, air and terrestrial vehicles, and pharmaceutical manufacturing and biological processes. [1][2][3][4][5][6] Among other effects, these particulates can contribute to the wear of the surfaces that come into contact with the fluid carrying the particles. The removal of particles from the fluid can assist in reducing the resulting level of wear.…”

Section: Introductionmentioning

confidence: 99%

“…The method is also more effective for larger particle sizes. Duarte et al 2 include a twist in the pipe wall upstream of the bend and find a 33% decrease in the peak erosion rates, as predicted through an Euler-Lagrange numerical model, but emphasize without detailed investigations of particle flow-flow path interaction the mechanisms at work in changing the particles flow cannot be well understood. Finally, Duarte et al 1 demonstrate that a small cavity within the bend can mitigate the bend erosion and fouling.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of particle trapping in various groove configurations in straight and bent flow channels

Florio¹

2020

SIMULATION

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A novel computational technique is applied to investigate particle trapping in straight and bent channel flow paths with various groove configurations in high-speed compressible, particle laden flow. The technique is valid for particle sizes of the same order of magnitude as the groove dimensions and where the particle–flow path, particle–particle, and particle–flow interactions play significant roles in determining the particle motion. The sacrificial grooves within the flow path can remove particles from the flow to reduce particle impact-induced wear. The feasibility of the trapping grooves and the conditions for which they are most beneficial can be gleaned from analysis of the model results. Three groove configurations are studied: a straight groove, a flared groove, and a 45 degree angle groove, for the same groove entrance size, groove depth, and spacing in a straight channel and a channel with a 90 degree bend. A transient maximum of 22% of the particles were trapped for the flared groove for the bent channel and a transient maximum of 15% of the particles for the straight channel configuration. The second groove of the bent channel produces the greatest single groove particle holding of 8.25% of all of the particles for the flared grove configuration. The contributions of the groove positioning, groove shape, gas flow, and particle interaction conditions to the trapping characteristics can be readily obtained from examination of the model results since the modeling technique includes detailed treatment of particle–flow path and flow interactions, allowing for the study of the mechanisms acting to trap the particles within the grooves.

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“…The results revealed that good agreement with experimental data by considering the wall roughness rather than a smooth wall in the simulation. (Duarte et al, 2017) have numerically and experimentally investigated the low erosion on twisted pipe bend than untwisted. Less erosion was found in elbow due to the swirling of particles in the 4-spiral designed pipe than the 8-spiral designed pipe bend and untwisted pipe bend.…”

mentioning

confidence: 99%

Modeling of Erosion Wear of Sand Water Slurry Flow through Pipe Bend using CFD

Singh¹,

Kumar²,

Mohapatra³

2019

JAFM

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In the present study, erosion wear of a 90 o pipe bend has been investigated using the Computational fluid dynamics code FLUENT. Solid particles were tracked to evaluate the erosion rate along with k-ɛ turbulent model for continuous/fluid phase flow field. Spherical shaped sand particles of size 183 µm and 277 µm of density 2631 kg/m 3 are injected from the inlet surface at velocity ranging from 0.5 to 8 ms -1 at two different concentrations. By considering the interaction between solid-liquid, effect of velocity, particle size and concentration were studied. Erosion wear was increased exponential with velocity, particles size and concentrations. Predicted results with CFD have revealed well in agreement with experimental results. The magnitude and location of maximum erosion wear were more severe in bend rather than the straight pipe.

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Innovative pipe wall design to mitigate elbow erosion: A CFD analysis

Cited by 73 publications

References 33 publications

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

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

Numerical investigation of particle trapping in various groove configurations in straight and bent flow channels

Modeling of Erosion Wear of Sand Water Slurry Flow through Pipe Bend using CFD

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