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Open AccessArticle

Influence of Sand Fines Transport Velocity on Erosion-Corrosion Phenomena of Carbon Steel 90-Degree Elbow

1
Mechanical Engineering Department, Universiti Teknologi PETRONAS, Perak 32610, Malaysia
2
Group Technical Solution PETRONAS, Menara Dayabumi, Kuala Lumpur 50050, Malaysia
*
Authors to whom correspondence should be addressed.
Metals 2020, 10(5), 626; https://doi.org/10.3390/met10050626
Received: 9 February 2020 / Revised: 27 February 2020 / Accepted: 7 March 2020 / Published: 11 May 2020
Erosion-corrosion is an ineluctable flow assurance problem confronted in hydrocarbon transportation and production systems. In this work, the effect of sand fines velocity on the erosion-corrosion behavior of AISI 1018 carbon steel long radius 90° elbows was experimentally and numerically investigated for liquid-solid flow conditions. Experiments were effectuated for sand fines of mean diameter 50 µm circulated in a flow loop with three different velocities (0.5, 1 and 2 m/s). To elucidate the erosion-corrosion mechanism and degradation rate, the material loss analysis, multilayer paint modeling (MPM) and microscopic imaging technique were employed, with computational fluid dynamics (CFD) and discrete phase modeling (DPM) also capacitating to evaluate the erosion distribution. It was perceived that increasing slurry velocity significantly changes the particle-wall impaction mechanism, leading to an increase in material degradation in the elbow bottom section up to 2 times in comparison to the low transport velocity. The erosion scars and pits development at the elbows internal surface was found to govern the wear mechanism in the carbon steel and made downstream section susceptible to erosion and corrosion. The material removal mechanisms were ascertained to change from cutting to pitting and plastic deformation with an increase of sand fines transportation velocity from 0.5 m/s to 2 m/s. View Full-Text
Keywords: sand fines erosion; elbow; CFD-DPM; erosion-corrosion sand fines erosion; elbow; CFD-DPM; erosion-corrosion
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MDPI and ACS Style

Khan, R.; H. Ya, H.; Pao, W.; bin Abdullah, M.Z.; Dzubir, F.A. Influence of Sand Fines Transport Velocity on Erosion-Corrosion Phenomena of Carbon Steel 90-Degree Elbow. Metals 2020, 10, 626.

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