Erosion of a multistage orifice due to liquid-solid flow

Araoye, Abdulrazaq A.; Badr, H. M.; Ahmed, Wael H.; Habib, Mohamed A.; Al–Sarkhi, A.

doi:10.1016/j.wear.2017.07.010

Cited by 10 publications

(5 citation statements)

References 28 publications

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“…Zhang et al [5] investigated the erosion wear mechanism of high-pressure pipes based on its macroscopic features and scanning electron microscope (SEM) at different positions of the pipes for particle diameters of 300 -425 mm and found the effects of impact angle and particle velocity on the wear. Araoye [6] investigated the effects of flow parameters and particle size in solid -liquid two-phase flow on the wear of carbon-steel tubes in experiments and numerical simulations for a particle size of 50-400 mm. Vieira et al [7] performed ultrasonic measurements to detect the wear of a pipe bend in the case of a gas -liquid-solid three-phase mixture for particle sizes of 20, 150 and 300 mm.…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…The realizable k-ε model proposed by Shih et al (1995) has extensive adaptability and more realistic results. It has been widely applied in the numerical simulation of two-phase flow erosion in these decades (Araoye et al , 2017; Zhang et al , 2020; Farokhipour et al , 2020). Therefore, the realizable k-ε model is selected to solve the turbulent flow.…”

Section: Physical Model and Numerical Methodsmentioning

confidence: 99%

Solid–liquid two-phase flow and erosion calculation of butterfly valves at small opening based on DEM method

Zhu

Lin

et al. 2020

ILT

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Purpose The study aims to decrease the effect of solid particles on a butterfly valve, which will cause seal failure and leakage, providing a reference for anti-wear design. Design/methodology/approach In this paper, computational fluid dynamics discrete element method (CFD-DEM) simulation was conducted to study the solid–liquid two-phase flow characteristics and erosion characteristics of a butterfly valve with a different opening. Findings Abrasion at 10% opening is affected by high-speed jets in upper and lower parts of the pipeline, where the erosion is intense. The impact of the jet on the upper part of 20% opening begins to weaken. With the top backflow vortex disappearing, the effect of lower jet is enhanced. Meanwhile, the bottom backflow vortex phenomenon is obvious, and the abrasion position moves downward. At 30% opening, the velocity is further weakened, and the circulation effect of lower flow channel is more obvious than that of the upper one. Originality/value It is the first time to use DEM to investigate the two-phase flow and erosion characteristics at a small opening of a butterfly valve, considering the effect of inter-particle collision. Therefore, this study carries on the thorough analysis and discussion. At the same opening degree, with increasing of the particle size, the abrasion of valve frontal surface increases when the size is less than 150 µm and decreases when it is greater than 150 µm. For the valve backflow surface, this boundary value becomes 200 µm. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2020-0264/

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“…Shan et al [11] investigated the effects of the orifice to pipe diameter ratio (defined as the β ratio) on the flow field behind a thin circular squareedged orifice plate. Moreover, some other researchers have studied about geometry of orifices [12][13][14], physical parameters of orifices [15][16][17], optimal conditions of orifices [18][19][20][21] and different algorithms for optimization methods [22-25] and numerical methods [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Multi objective optimization of multi-hole orifices using FSI analysis and NSGA II algorithm

Taheri

Mahdavi

Safikhani

2021

IJE

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Multi-hole orifices have better performance than single-hole orifices. In this paper, multi-objective optimization of multi-hole orifices is performed using a Fluid-Solid Interaction (FSI) analysis and multiobjective genetic algorithm (NSGA II). In all numerical analysis, the governing equations of the solid and the governing equations of the fluid are carried out for orifice and fluid around orifice, respectively. All calculations are made for a 16-hole orifice with circular holes. The design variable in the optimization process is the distance between the holes of the orifice and thus the amount of shrinkage or expansion of the orifice geometry. The objective functions are the pressure drop created on the sides of the orifice, the deformation and tension created in the orifice structure, which should be maximized, minimized and minimized, respectively. In the results section, the Pareto front are presented which represent useful information for designing the multi-hole orifices geometry, and five orifices are also introduced as final design options that have better performance. The results of the sensitivity analysis of the various parameters are also presented and discussed in detail in the multi-hole orifices.

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Erosion of a multistage orifice due to liquid-solid flow

Cited by 10 publications

References 28 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

Solid–liquid two-phase flow and erosion calculation of butterfly valves at small opening based on DEM method

Multi objective optimization of multi-hole orifices using FSI analysis and NSGA II algorithm

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