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Numerical Simulation of Elbow Erosion in Shale Gas Fields under Gas-Solid Two-Phase Flow
- Source :
- Energies; Volume 14; Issue 13; Pages: 3804, Energies, Vol 14, Iss 3804, p 3804 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- Erosion is one of the most common forms of material failure and equipment damage in gas transmission pipelines. Shale gas fields use hydraulic fracturing whereby solid particles are often carried in the gas flow, and the pipeline is in a high-pressure state, which is more likely to cause erosion. The prediction of particle erosion regulation in gas-solid two-phase flow is an effective means to ensure the safe operation of shale gas fields. In this paper, an integrated CFD-DPM model is established to investigate the erosion of 90° elbow in a shale gas field under gas-solid two-phase flow, employing the realizable k-ε turbulence model, discrete phase model, and erosion rate prediction model. The reliability of the proposed numerical models is verified by comparing the predicted data with the experimental data. Moreover, the effects of six important factors on maximum erosion rate are analyzed, including gas velocity, mass flow rate of sand particles, particle diameter, shape coefficient of sand particles, pipeline diameter, elbow radius of curvature. Specifically, the results indicate that the gas velocity, mass flow rate and shape coefficient of sand particles are positively correlated with the maximum erosion rate, while the pipe diameter and the elbow radius of curvature are negatively correlated with the maximum erosion rate. A new correlation was developed, which included four dimensionless groups, namely Reynolds number, diameter ratio, density ratio and particle number. The correlation can be used to predict maximum corrosion rate of elbows. This work can provide data reference and theoretical basis for mitigating the erosion rate of pipelines and managing the integrity of gas pipelines.
- Subjects :
- Technology
Control and Optimization
Particle number
numerical simulation
elbow erosion
two-phase flow
DPM
shale gas
020209 energy
Flow (psychology)
Energy Engineering and Power Technology
02 engineering and technology
Physics::Geophysics
symbols.namesake
Hydraulic fracturing
020401 chemical engineering
0202 electrical engineering, electronic engineering, information engineering
Mass flow rate
0204 chemical engineering
Electrical and Electronic Engineering
Engineering (miscellaneous)
Renewable Energy, Sustainability and the Environment
Turbulence
Reynolds number
Mechanics
Erosion
symbols
Environmental science
Two-phase flow
Energy (miscellaneous)
Subjects
Details
- Language :
- English
- ISSN :
- 19961073
- Database :
- OpenAIRE
- Journal :
- Energies; Volume 14; Issue 13; Pages: 3804
- Accession number :
- edsair.doi.dedup.....3ed848d8f93e8e7833e7cc56babeaa3c
- Full Text :
- https://doi.org/10.3390/en14133804