Numerical simulation on deposition evolution of natural gas hydrate in pipeline
The traditional Euler-Euler fluid model is to predict the flow and deposition of two phases by approximating the hydrate particles as a fluid phase, but does not consider the effect of particle formation caused by phase change in the flow process. Herein, the Euler-Euler fluid mode, the interfacial...
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| Format: | Article |
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Editorial Office of Oil & Gas Storage and Transportation
2022-02-01
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| Series: | You-qi chuyun |
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| Online Access: | http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.02.011 |
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| author | Xiang LIU Wuchang WANG Jialu ZHANG Yuxing LI Qihui HU Yuanxing NING Zhiming LIU |
| author_facet | Xiang LIU Wuchang WANG Jialu ZHANG Yuxing LI Qihui HU Yuanxing NING Zhiming LIU |
| author_sort | Xiang LIU |
| collection | DOAJ |
| description | The traditional Euler-Euler fluid model is to predict the flow and deposition of two phases by approximating the hydrate particles as a fluid phase, but does not consider the effect of particle formation caused by phase change in the flow process. Herein, the Euler-Euler fluid mode, the interfacial area transport equation and the convection equation were implanted into the open source computing software OpenFoam 4.0, and the key phase change source term was introduced with consideration to the hydrate particle aggregation and breakage efficiency. The amount of hydrate formation was calculated in real time according to the temperature field distribution in the pipeline and taken into account in the subsequent flow deposition process. However, the thermal insulation effect brought by the deposition in the pipeline will have an effect on the temperature field distribution, resulting in the dynamic evolution of the deposits. The numerical simulation results show that: the hydrates are firstly deposited on the top of the pipeline with the increase of hydrate volume fraction in the pipeline inlet, showing the trend of marginalization and centripetal growth. More hydrates will be formed in the system as the degree of supercooling increases continuously, but there is an obvious threshold for the maximum particle size. Among different flow modes, it is found that uniform flow is the safest flow condition in the pipeline. It can provide theoretical basis for the exploitation, prevention and control of deep-sea hydrate slurry. |
| first_indexed | 2024-04-24T10:05:45Z |
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| id | doaj.art-defd963837454eee8831ff050986447b |
| institution | Directory Open Access Journal |
| issn | 1000-8241 |
| language | zho |
| last_indexed | 2024-04-24T10:05:45Z |
| publishDate | 2022-02-01 |
| publisher | Editorial Office of Oil & Gas Storage and Transportation |
| record_format | Article |
| series | You-qi chuyun |
| spelling | doaj.art-defd963837454eee8831ff050986447b2024-04-13T02:28:16ZzhoEditorial Office of Oil & Gas Storage and TransportationYou-qi chuyun1000-82412022-02-0141221121810.6047/j.issn.1000-8241.2022.02.011yqcy-41-2-211Numerical simulation on deposition evolution of natural gas hydrate in pipelineXiang LIU0Wuchang WANG1Jialu ZHANG2Yuxing LI3Qihui HU4Yuanxing NING5Zhiming LIU6CNOOC Research Institute Co. Ltd.//State Key Laboratory of Natural Gas HydrateCollege of Pipeline and Civil Engineering, China University of Petroleum (East China)//Shangdong Key Laboratory of Oil & Gas Storage and Transportation SafetyCNOOC Research Institute Co. Ltd.//State Key Laboratory of Natural Gas HydrateCollege of Pipeline and Civil Engineering, China University of Petroleum (East China)//Shangdong Key Laboratory of Oil & Gas Storage and Transportation SafetyCNOOC Research Institute Co. Ltd.//State Key Laboratory of Natural Gas HydrateCNOOC Research Institute Co. Ltd.//State Key Laboratory of Natural Gas HydrateCNOOC Research Institute Co. Ltd.//State Key Laboratory of Natural Gas HydrateThe traditional Euler-Euler fluid model is to predict the flow and deposition of two phases by approximating the hydrate particles as a fluid phase, but does not consider the effect of particle formation caused by phase change in the flow process. Herein, the Euler-Euler fluid mode, the interfacial area transport equation and the convection equation were implanted into the open source computing software OpenFoam 4.0, and the key phase change source term was introduced with consideration to the hydrate particle aggregation and breakage efficiency. The amount of hydrate formation was calculated in real time according to the temperature field distribution in the pipeline and taken into account in the subsequent flow deposition process. However, the thermal insulation effect brought by the deposition in the pipeline will have an effect on the temperature field distribution, resulting in the dynamic evolution of the deposits. The numerical simulation results show that: the hydrates are firstly deposited on the top of the pipeline with the increase of hydrate volume fraction in the pipeline inlet, showing the trend of marginalization and centripetal growth. More hydrates will be formed in the system as the degree of supercooling increases continuously, but there is an obvious threshold for the maximum particle size. Among different flow modes, it is found that uniform flow is the safest flow condition in the pipeline. It can provide theoretical basis for the exploitation, prevention and control of deep-sea hydrate slurry.http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.02.011deep-sea pipelinenatural gas hydrateinterfacial area transportphase changedeposition |
| spellingShingle | Xiang LIU Wuchang WANG Jialu ZHANG Yuxing LI Qihui HU Yuanxing NING Zhiming LIU Numerical simulation on deposition evolution of natural gas hydrate in pipeline You-qi chuyun deep-sea pipeline natural gas hydrate interfacial area transport phase change deposition |
| title | Numerical simulation on deposition evolution of natural gas hydrate in pipeline |
| title_full | Numerical simulation on deposition evolution of natural gas hydrate in pipeline |
| title_fullStr | Numerical simulation on deposition evolution of natural gas hydrate in pipeline |
| title_full_unstemmed | Numerical simulation on deposition evolution of natural gas hydrate in pipeline |
| title_short | Numerical simulation on deposition evolution of natural gas hydrate in pipeline |
| title_sort | numerical simulation on deposition evolution of natural gas hydrate in pipeline |
| topic | deep-sea pipeline natural gas hydrate interfacial area transport phase change deposition |
| url | http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.02.011 |
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