Erosion prediction of liquid-particle two-phase flow in pipeline elbows via CFD–DEM coupling method

Chen, J.; Wang, Yueshe; Li, Xiufeng; He, Ren; Han, Shuang; Chen, Yanlin

doi:10.1016/j.powtec.2014.12.057

Cited by 106 publications

(30 citation statements)

References 24 publications

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“…The validity of the above drag force expression has been investigated by many researchers [19][20][21], who have indicated that this expression works well in flow systems with relatively low Reynolds numbers.…”

Section: Governing Equations Of Cfd and Fluid-particle Intercationmentioning

confidence: 99%

A Coupled CFD–DEM Simulation of Slurry Infiltration and Filter Cake Formation during Slurry Shield Tunneling

Zhang

Yin

2018

Infrastructures

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Tunneling in highly permeable ground using a slurry shield machine can be challenging because it is difficult to form the so-called filter cake on the tunnel face to transport the support pressure. Consequently, destructive accidents might happen, such as face instability and water inrush. How to form an efficient filter cake in time is crucial during engineering practice, especially in ground with high permeability. Various theoretical and experimental analyses regarding the formation of filter cakes have been conducted. However, due to the complexity of this problem, which has to incorporate the mechanical and hydraulic behaviors of the fluid-solid mixture system, few numerical simulations are found in the literature. In this paper, with the aid of a newly developed numerical tool, a coupled CFD (computational fluid dynamics)-DEM (discrete element method) simulation is established to study the slurry infiltration and filter cake formation during slurry shield tunneling. The slurry infiltration process is simulated by modelling the scheme of the infiltration column test, in which sedimentation behaviors of slurry particles are captured and compared with experimental results. The results show that the sedimentation behaviors of the slurry particles and filter cake formation phenomenon are well captured by simulations and in accordance with the experiments, which indicates the robustness of the coupled CFD-DEM simulation used in present work.

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Section: Governing Equations Of Cfd and Fluid-particle Intercationmentioning

confidence: 99%

A Coupled CFD–DEM Simulation of Slurry Infiltration and Filter Cake Formation during Slurry Shield Tunneling

Zhang

Yin

2018

Infrastructures

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“…Computational tools have become a common way to predict erosion and breakage. One recent method for evaluating the erosion rate and locating critical failure points is to combine computational fluid dynamics (CFD) with discrete element method (DEM) . This combination allows the motion of every particle in the domain to be computed and takes into consideration the particle‐fluid interactions.…”

Section: Introductionmentioning

confidence: 99%

Collision Characteristics for Predicting Particle Attrition and Pipe Wear in Conveying Systems

Uzi

Levy

2018

Chem Eng & Technol

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Pipe wear and particle attrition are common and undesired effects when conveying particles in pipelines. An approach for predicting these effects to spare considerable efforts spent in trial and error to achieve the optimum operating conditions is reported. The model is composed of a one‐dimensional flow model that calculates the two‐phase flow dynamics, a one‐dimensional breakage algorithm (ODBA) to compute attrition of the particles, and a one‐dimensional erosion model (ODEM) to compute the erosion rate. The ODBA and ODEM exploit machine functions derived from simulations that define collision characteristics. Several collision characteristics were successfully generated universally; therefore, allowing the attrition and erosion models to stand alone in the examined ranges.

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“…Their results demonstrated that the erosion rate could be signi cantly reduced by adding ribs, and the isosceles right-angled triangle ribs had the best anti-erosion performance among the studied con gurations. Chen et al [23] used CFD methods to investigate the erosive e ects of a solid particle-laden air ow on the 45-, 60-, and 90-degree elbow ttings of diameter of 40 mm. They showed that the maximum erosion rate occurred near the output in all the three elbows; in addition, the erosion rate intensi ed with increasing the elbow angle.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of sand particle erosion in return bends in gas-particle two-phase flow

et al. 2018

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In gas and oil industry, erosion damage to pipelines' bends and elbows due to the presence of sand particles has been a challenging issue. In this study, a computational model approach was used to evaluate the erosion rates at di erent vertical return bends: sharp bend, standard elbow, 180 pipe bend, and long elbow. The air ow in the pipe was simulated using the SIMPLE method and the k ! SST turbulence model. An Eulerian-Lagrangian approach was used to predict particle trajectories and related erosion rates. Di erent particle sizes and mass ow rates were considered, and Oka model was used in these simulations to evaluate the erosion rate. Under the same condition, the simulation results indicated that the sharp return bends experienced the highest erosion rates, and the 180 bends experienced the lowest erosion among the studied con gurations. It was also found that the erosion rate was linearly proportional to the mass ow rate of particles for all cases studied. contributions are in the elds of computational uid dynamics, multiphase ows, particle transport, heat transfer, thermal systems, and energy management.

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Erosion prediction of liquid-particle two-phase flow in pipeline elbows via CFD–DEM coupling method

Cited by 106 publications

References 24 publications

A Coupled CFD–DEM Simulation of Slurry Infiltration and Filter Cake Formation during Slurry Shield Tunneling

A Coupled CFD–DEM Simulation of Slurry Infiltration and Filter Cake Formation during Slurry Shield Tunneling

Collision Characteristics for Predicting Particle Attrition and Pipe Wear in Conveying Systems

Numerical modeling of sand particle erosion in return bends in gas-particle two-phase flow

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