Numerical simulation of solid particle erosion in pipe bends for liquid–solid flow

Peng, Weilong; Cao, Xuewen

doi:10.1016/j.powtec.2016.02.030

Cited by 151 publications

(37 citation statements)

References 33 publications

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“…The selected turbulence model is established on the basis of the computational demands and decently accurate predicted flow phenomenon proposed by Xie et al 23 In addition, the re-normalization group (RNG) k-e is widely employed to deal with the flow turbulence in elbow erosion. 14,24,25 Then, the equations of the model are expressed as follows…”

Section: Mathematical Theorymentioning

confidence: 99%

Numerical investigation on the solid particle erosion in elbow with water–hydrate–solid flow

et al. 2019

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Erosion in pipeline caused by solid particles, which may lead to premature failure of the pipe system, is regarded as one of the most important concerns in the field of oil and gas. Therefore, the Euler–Lagrange, erosion model, and discrete phase model are applied for the purpose of simulating the erosion of water–hydrate–solid flow in submarine hydrate transportation pipeline. In this article, the flow and erosion characteristics are well verified on the basis of experiments. Moreover, analysis is conducted to have a good understanding of the effects of hydrate volume, mean curvature radius/pipe diameter ( R/ D) rate, flow velocity, and particle diameter on elbow erosion. It is finally obtained that the hydrate volume directly affects the Reynolds number through viscosity and the trend of the Reynolds number is consistent with the trend of erosion rate. Taking into account different R/ D rates, the same Stokes number reflects different dynamic transforms of the maximum erosion zone. However, the outmost wall (zone D) will be the final erosion zone when the value of the Stokes number increases to a certain degree. In addition, the erosion rate increases sharply along with the increase of flow velocity and particle diameter. The effect of flow velocity on the erosion zone can be ignored in comparison with the particle diameter. Moreover, it is observed that flow velocity is deemed as the most sensitive factor on erosion rate among these factors employed in the orthogonal experiment.

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Section: Mathematical Theorymentioning

confidence: 99%

Numerical investigation on the solid particle erosion in elbow with water–hydrate–solid flow

et al. 2019

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“…However, it cannot tell when it is the best to accelerate to abrasive mode to erode the rock and coal, because abrasive acceleration relates not only to gas velocity but also to gas density, viscosity, temperature, pressure gradient, etc. [26][27][28][29]. Furthermore, the inlet pressure is critical to abrasive acceleration and velocity, because it determines the expansion state of the gas jet.…”

Section: Further Optimizing the Laval Nozzlementioning

confidence: 99%

Optimal Nozzle Structure for an Abrasive Gas Jet for Rock Breakage

Liu

Zhang

et al. 2018

Geofluids

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Abrasive gas jet technologies are efficient and beneficial and are widely used to drill metal and glass substrates. When the inlet pressure is increased, gas jets could be powerful enough to break rock. They have potential uses in coal-bed methane exploration and drilling because of their one-of-a-kind nonliquid jet drilling, which avoids water invasion and borehole collapse. Improving the efficiency of rock breakage using abrasive gas jets is an essential precondition for future coal-bed methane exploration. The nozzle structure is vital to the flow field and erosion rate. Furthermore, optimizing the nozzle structure for improving the efficiency of rock breakage is essential. By combining aerodynamics and by fixing the condition of the nozzle in the drill bit, we design four types of preliminary nozzles. The erosion rates of the four nozzles are calculated by numerical simulation, enabling us to conclude that a nozzle at Mach 3 can induce maximum erosion when the pressure is 25 MPa. Higher pressures cannot improve erosion rates because the shield effect decreases the impact energy. Smaller pressures cannot accelerate erosion rates because of short expansion waves and low velocities of the gas jets. An optimal nozzle structure is promoted with extended expansion waves and less obvious shield effects. To further optimize the nozzle structure, erosion rates at various conditions are calculated using the single-variable method. The optimal nozzle structure is achieved by comparing the erosion rates of different nozzle structures. The experimental results on rock erosion are in good agreement with the numerical simulations. The optimal nozzle thus creates maximum erosion volume and depth.

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“…The flow model was selected over the k ε turbulent model and others, because of its accuracy in predicting flow features around region with strong streamline curvature and relatively low computational time (Yan et al, 2017). Peng and Cao (2016) predicted the velocity distribution in a 45°, 90°, and 180° pipe bend. From the study, the fluid flow velocity profile was largely influenced by the shape of the pipe.…”

Section: Introductionmentioning

confidence: 99%

“…Notwithstanding, the identification of the erosion hotspot is largely dependent on the pipe bend angle. Analysis of predicting erosion hotspots for different pipe bend is important (Peng and Cao, 2016).…”

Section: Introductionmentioning

confidence: 99%

Computational fluid dynamic analysis for investigating the influence of pipe curvature on erosion rate prediction during crude oil production

Ejeh

Boah

Akhabue

et al. 2020

Exp. Comput. Multiph. Flow

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The flow dynamics in pipes is a very complex system because it is largely affected by flow conditions. The transport of crude oil in pipelines within unconsolidated petroleum reservoirs is associated with presence of solid particles. These particles are often transported as dispersed phases during crude oil production and are therefore detrimental to the pipe surface integrity. This could lead to the occurrences of crevice corrosion due to pipe erosion. In relation to the above discussion, this paper is aimed at analyzing crude oil dynamics during flow through pipeline and identifying erosion hotspot for different pipe elbow curvatures. Reynolds Averaging Navier-Stokes (RANS) and Particle Tracing Modeling (PTM) approach were used. The focus is to simulate fluid dynamics and particle tracing, respectively. Post-processed results revealed that the fluid velocity magnitude was relatively high at the region with minimum curvature radius. The maximum static pressure and turbulence dissipation rate were experienced in areas with low-velocity magnitude. Also, the rate of erosive wear was relatively high at the elbow and the hotspot varied with pipe curvature. The particle flow rate, mass, and size were varied and it was found that erosion rate increased with an increase in particle properties.

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Numerical simulation of solid particle erosion in pipe bends for liquid–solid flow

Cited by 151 publications

References 33 publications

Numerical investigation on the solid particle erosion in elbow with water–hydrate–solid flow

Numerical investigation on the solid particle erosion in elbow with water–hydrate–solid flow

Optimal Nozzle Structure for an Abrasive Gas Jet for Rock Breakage

Computational fluid dynamic analysis for investigating the influence of pipe curvature on erosion rate prediction during crude oil production

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