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水合物-固体颗粒流作用下弯管内固体颗粒冲蚀的数值研究

Numerical investigation on the solid particle erosion in elbow with water-hydrate-solid flow.

作者信息

Zhang Liang, Zhou JiaWei, Zhang Bo, Gong Wei

机构信息

School of Mechanical Engineering, Southwest Petroleum University, Chengdu, P.R. China.

Chongqing Gas District, Petro China Southwest Oil and Gas Field Company, Chongqing, P.R. China.

出版信息

Sci Prog. 2020 Jan-Mar;103(1):36850419897245. doi: 10.1177/0036850419897245. Epub 2019 Dec 25.

DOI:10.1177/0036850419897245
PMID:31875772
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10452799/
Abstract

Erosion in pipeline caused by solid particles, which may lead to premature failure of the pipe system, is regarded as one of the most important concerns in the field of oil and gas. Therefore, the Euler-Lagrange, erosion model, and discrete phase model are applied for the purpose of simulating the erosion of water-hydrate-solid flow in submarine hydrate transportation pipeline. In this article, the flow and erosion characteristics are well verified on the basis of experiments. Moreover, analysis is conducted to have a good understanding of the effects of hydrate volume, mean curvature radius/pipe diameter (/) rate, flow velocity, and particle diameter on elbow erosion. It is finally obtained that the hydrate volume directly affects the Reynolds number through viscosity and the trend of the Reynolds number is consistent with the trend of erosion rate. Taking into account different / rates, the same Stokes number reflects different dynamic transforms of the maximum erosion zone. However, the outmost wall (zone D) will be the final erosion zone when the value of the Stokes number increases to a certain degree. In addition, the erosion rate increases sharply along with the increase of flow velocity and particle diameter. The effect of flow velocity on the erosion zone can be ignored in comparison with the particle diameter. Moreover, it is observed that flow velocity is deemed as the most sensitive factor on erosion rate among these factors employed in the orthogonal experiment.

摘要

固体颗粒导致的管道侵蚀可能会导致管道系统过早失效，这被视为油气领域最重要的问题之一。因此，为了模拟海底水合物输送管道中水合物 - 固体流的侵蚀情况，应用了欧拉 - 拉格朗日侵蚀模型和离散相模型。在本文中，流动和侵蚀特性在实验的基础上得到了很好的验证。此外，还进行了分析，以深入了解水合物体积、平均曲率半径/管道直径（/）比、流速和颗粒直径对弯头侵蚀的影响。最终得出，水合物体积通过粘度直接影响雷诺数，且雷诺数的趋势与侵蚀速率的趋势一致。考虑不同的/比时，相同的斯托克斯数反映了最大侵蚀区域不同的动态变化。然而，当斯托克斯数的值增加到一定程度时，最外层壁面（区域D）将成为最终的侵蚀区域。此外，侵蚀速率随着流速和颗粒直径的增加而急剧增加。与颗粒直径相比，流速对侵蚀区域的影响可以忽略不计。此外，观察到在正交实验中使用的这些因素中，流速被认为是对侵蚀速率最敏感的因素。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/d52b98d88666/10.1177_0036850419897245-fig17.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/2140f3ec6478/10.1177_0036850419897245-fig1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/d52b98d88666/10.1177_0036850419897245-fig17.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/2140f3ec6478/10.1177_0036850419897245-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/aaec71ef7589/10.1177_0036850419897245-fig2.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/484daeb2b9fd/10.1177_0036850419897245-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/ca7f2cf66a75/10.1177_0036850419897245-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/21f14385c9ae/10.1177_0036850419897245-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/110c1864f529/10.1177_0036850419897245-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/93bf02a1202c/10.1177_0036850419897245-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/51e17cda366e/10.1177_0036850419897245-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/ddb3ad7ef82a/10.1177_0036850419897245-fig10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/71b4b9e5e065/10.1177_0036850419897245-fig11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/925a68b1c8de/10.1177_0036850419897245-fig12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/618fbce6c201/10.1177_0036850419897245-fig13.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/df703d3d89af/10.1177_0036850419897245-fig14.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/a43b8f22e28c/10.1177_0036850419897245-fig15.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/86c0e2f9725b/10.1177_0036850419897245-fig16.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8317/10452799/d52b98d88666/10.1177_0036850419897245-fig17.jpg

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