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Rahman S, Khan R, Niazi UM, Legutko S, Khan MA, Ahmed BA, Petrů J, Hajnyš J, Irfan M. Performance Prediction of Erosive Wear of Steel for Two-Phase Flow in an Inverse U-Bend. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5558. [PMID: 36013695 PMCID: PMC9414689 DOI: 10.3390/ma15165558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Erosion of the elbow due to non-Newtonian viscous slurry flows is often observed in hydrocarbon transportation pipelines. This paper intends to study the erosion behavior of double offset U-bends and 180° U-bends for two-phase (liquid-sand) flow. A numerical simulation was conducted using the Discrete Phase Model (DPM) on carbon steel pipe bends with a 40 mm diameter and an R/D ratio of 1.5. The validity of the erosion model has been established by comparing it with the results quantified in the literature by experiment. While the maximum erosive wear rates of all evaluated cases were found to be quite different, the maximum erosion locations have been identified between 150° and 180° downstream at the outer curvature. It was seen that with the increase in disperse phase diameter, the erosive wear rate and impact area increased. Moreover, with the change of configuration from a 180° U-bend to a double offset U-bend, the influence of turbulence on the transit of the disperse phase decreases as the flow approaches downstream and results in less erosive wear in a double offset U-bend. Furthermore, the simulation results manifest that the erosive wear increases with an increase in flow velocity, and the erosion rate of the double offset U-bend was nearly 8.58 times less than the 180° U-bend for a carrier fluid velocity of 2 m/s and 1.82 times less for 4 m/s carrier fluid velocity. The erosion rate of the double offset U-bend was reduced by 120% compared to the 180° U-bend for 6 m/s in liquid-solid flow.
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Affiliation(s)
- Saifur Rahman
- Electrical Engineering Department, College of Engineering, Najran University, Najran 61441, Saudi Arabia
| | - Rehan Khan
- Department of Mechanical Engineering, College of Electrical and Mechanical Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan
| | - Usama Muhammad Niazi
- Department of Mechanical Engineering Technology, National Skills University, Islamabad 44000, Pakistan
| | - Stanislaw Legutko
- Faculty of Mechanical Engineering, Poznan University of Technology, 60-965 Poznan, Poland
| | - Muhammad Ali Khan
- Department of Mechanical Engineering, College of Electrical and Mechanical Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan
| | - Bilal Anjum Ahmed
- Department of Mechanical Engineering, College of Electrical and Mechanical Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan
| | - Jana Petrů
- Department of Machining, Assembly and Engineering Metrology, Mechanical Engineering Faculty, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava, Czech Republic
| | - Jiří Hajnyš
- Department of Machining, Assembly and Engineering Metrology, Mechanical Engineering Faculty, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava, Czech Republic
| | - Muhammad Irfan
- Electrical Engineering Department, College of Engineering, Najran University, Najran 61441, Saudi Arabia
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Chen L, Sun Z, Ma H, Li P, Ma G, Gao K, Zhang Y. Energy loss caused by the elbow of stiff shotcrete pneumatic conveying based on response surface method and CFD-DEM. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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