Investigation on Erosion of Continuous Bending Pipes in Different Directions

With the increasing demand for natural gas in the world, ensuring the safety and stability of pipeline transportation of natural gas has become an important subject. Compared with the studies focused on the erosion of single bend, T-pipe, and U-pipe, the studies on the continuous bend in different d...

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Autores principales:	Bingcheng Li, Wei Li, Min Zeng, Qiuwang Wang
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/c145552c8c564cbdb629ab2b15d2a008
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spelling	oai:doaj.org-article:c145552c8c564cbdb629ab2b15d2a0082021-11-15T21:48:32ZInvestigation on Erosion of Continuous Bending Pipes in Different Directions10.3303/CET21880592283-9216https://doaj.org/article/c145552c8c564cbdb629ab2b15d2a0082021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11852https://doaj.org/toc/2283-9216With the increasing demand for natural gas in the world, ensuring the safety and stability of pipeline transportation of natural gas has become an important subject. Compared with the studies focused on the erosion of single bend, T-pipe, and U-pipe, the studies on the continuous bend in different directions are scarce. In this paper, the model is characterized by three straight pipes with the same length and directions along the Z, Y, and X axes of the Cartesian coordinate system. The numerical simulation of gas-solid two-phase flow under different gas to solid mass ratios in the continuous bent pipeline is carried out by selecting the Oka erosion model. The results indicate that the velocity distribution of the second bend is different from that of the first bend. With the change of flow deflection angle and the accumulation of the centrifugal force, the shape of the velocity contours in the second bend turns from “basin” into a "comma" and the velocity experiences a process including rapid increase, slow decrease, gradual increase, and steep decrease. When the flow rate is 12.5 m/s, the maximum speed of the second bend is about 5 % greater than that of the first bend. Instead of a “straight-line” shape in the erosion area of the first bend, the second presents a "feather" shape. As the flow rate increases gradually, the shape characteristics of the "feather" erosion zone change from "short and dense" to "long and loose". Besides, the maximum erosion rate of the second bend is greater than that of the first even about 1.52 times. Finally, according to the simulation results, the protection suggestion of the continuous elbow is given.Bingcheng LiWei LiMin ZengQiuwang WangAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Bingcheng Li Wei Li Min Zeng Qiuwang Wang Investigation on Erosion of Continuous Bending Pipes in Different Directions
description	With the increasing demand for natural gas in the world, ensuring the safety and stability of pipeline transportation of natural gas has become an important subject. Compared with the studies focused on the erosion of single bend, T-pipe, and U-pipe, the studies on the continuous bend in different directions are scarce. In this paper, the model is characterized by three straight pipes with the same length and directions along the Z, Y, and X axes of the Cartesian coordinate system. The numerical simulation of gas-solid two-phase flow under different gas to solid mass ratios in the continuous bent pipeline is carried out by selecting the Oka erosion model. The results indicate that the velocity distribution of the second bend is different from that of the first bend. With the change of flow deflection angle and the accumulation of the centrifugal force, the shape of the velocity contours in the second bend turns from “basin” into a "comma" and the velocity experiences a process including rapid increase, slow decrease, gradual increase, and steep decrease. When the flow rate is 12.5 m/s, the maximum speed of the second bend is about 5 % greater than that of the first bend. Instead of a “straight-line” shape in the erosion area of the first bend, the second presents a "feather" shape. As the flow rate increases gradually, the shape characteristics of the "feather" erosion zone change from "short and dense" to "long and loose". Besides, the maximum erosion rate of the second bend is greater than that of the first even about 1.52 times. Finally, according to the simulation results, the protection suggestion of the continuous elbow is given.
format	article
author	Bingcheng Li Wei Li Min Zeng Qiuwang Wang
author_facet	Bingcheng Li Wei Li Min Zeng Qiuwang Wang
author_sort	Bingcheng Li
title	Investigation on Erosion of Continuous Bending Pipes in Different Directions
title_short	Investigation on Erosion of Continuous Bending Pipes in Different Directions
title_full	Investigation on Erosion of Continuous Bending Pipes in Different Directions
title_fullStr	Investigation on Erosion of Continuous Bending Pipes in Different Directions
title_full_unstemmed	Investigation on Erosion of Continuous Bending Pipes in Different Directions
title_sort	investigation on erosion of continuous bending pipes in different directions
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/c145552c8c564cbdb629ab2b15d2a008
work_keys_str_mv	AT bingchengli investigationonerosionofcontinuousbendingpipesindifferentdirections AT weili investigationonerosionofcontinuousbendingpipesindifferentdirections AT minzeng investigationonerosionofcontinuousbendingpipesindifferentdirections AT qiuwangwang investigationonerosionofcontinuousbendingpipesindifferentdirections
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Investigation on Erosion of Continuous Bending Pipes in Different Directions

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