Study of particle mass loading effects on sand erosion in a series of fittings

Farokhipour, A.; Mansoori, Z.; Rasoulian, M.A.; Rasteh, A.; Saffar‐Avval, Majid; Ahmadi, Goodarz

doi:10.1016/j.powtec.2020.06.040

Cited by 17 publications

(2 citation statements)

References 30 publications

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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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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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“…Powder formation is a very important technology in a wide range of industrial fields (e.g., ceramic, pharmaceutical, chemical, food, and mineral industries). − Especially in the ceramic industry, powder handling technology is important because of the demand for high-quality and high-precision products. Many ceramic products are formed using a press molding process. , In the process, residues remain on a mold surface, resulting in an increase in surface roughness, dimensional deterioration, and poor functionalities.…”

Section: Introductionmentioning

confidence: 99%

Nanotextured Mold Surface with DLC Coating for Reduction in Residual Ceramic Particles

et al. 2021

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In the ceramic industry, ceramic particles remain on a mold surface due to which the mold requires frequent cleaning during press molding, reducing productivity. Surface texturing and tetrahedral amorphous carbon (ta-C) coatings are well-known surface-energy controllable treatments developed for low adhesion, low friction, and high wear resistance. In the present paper, we demonstrate the effect of reducing ceramic residues using nanotexturing, ta-C coatings, and their combination. We compare two surface morphologies (i.e., 770 nm pitch nanotexturing and flat) and five materials (i.e., nonhardened steel, hardened steel, ta-C, and two types of nitrogen-doped ta-C (ta-CNx). Molding test results show that the ta-C coating on flat surfaces with the highest hardness of 30 GPa shows the lowest residual amount of 5.9 μg for Al2O3 ceramic particles. The amount is 82% less than that of the nonhardened steel. The ta-CNx20, made with a nitrogen flow rate of 20 sccm, shows the lowest residual amount of 234 μg for SiO2 ceramic particles, which is 81% less than that of the nontextured ta-CNx20. In conclusion, we provide design guidelines for nanotextured mold surfaces including the texturing pitch should be small enough for ceramic particles; the mold surface should be sufficiently hard; the lower the surface energy per unit area, the less residues of ceramic particles.

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Study on Particle Erosion Prediction of Elbows and Plugged Tees in Gas-Solid Flow

Zhao

Cao

et al. 2022

Proceedings of the 2021 International Petroleum and Petrochemical Technology Conference

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Study of particle mass loading effects on sand erosion in a series of fittings

Cited by 17 publications

References 30 publications

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

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

Nanotextured Mold Surface with DLC Coating for Reduction in Residual Ceramic Particles

Study on Particle Erosion Prediction of Elbows and Plugged Tees in Gas-Solid Flow

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