| 弯曲柔性立管举升气液两相流时的流固耦合效应研究 |
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| 引用本文： | 高岳,朱红钧,王珂楠,颜知音,胡洁.弯曲柔性立管举升气液两相流时的流固耦合效应研究[J].海洋工程,2022,40(1):39-49. |
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| 作者姓名： | 高岳 朱红钧 王珂楠 颜知音 胡洁 |
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| 作者单位： | 西南石油大学石油与天然气工程学院,四川成都 610500;西南石油大学石油与天然气工程学院,四川成都 610500;天津大学水利工程仿真与安全国家重点实验室,天津 300350;海洋石油工程股份有限公司,天津 300452;中国石油西南油气田公司天然气净化总厂,重庆 400021 |
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| 基金项目： | 国家自然科学基金面上项目(51979238)；天津大学水利工程仿真与安全国家重点实验室开放课题(HSSE-2005) |
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| 摘 要： | 海洋油气混输时,气液两相流与混输立管之间的双向流固耦合作用机理十分复杂.针对柔性立管与气液两相流的流固耦合响应问题,在气液两相循环试验装置中开展了不同流型两相流流动特性及柔性立管振动响应的测试,利用高速摄像非介入测试技术同步捕捉了柔性立管的振动位移与管内的流型演变过程,对比了不同流型气液两相流诱导的立管振动响应特性,通过对比固定和振动立管内的气液两相流动特性,辨析了振动对管内两相流动的影响.结果表明:柔性立管中出现了泡状流、泡状—段塞流、段塞流、段塞—搅拌流和搅拌流五种流型,不同流型的气液两相流诱导立管振动的机理不同,在段塞—搅拌流作用时立管的振动响应最剧烈.与固定立管相比,强烈的振动不同程度地改变了气液两相流的流动特性,振动立管中部分两相流流型转变的临界条件有明显地调整,相对而言,振动对搅拌流和泡状流的影响较小.
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| 关 键 词： | 海洋立管 气液两相流 流固耦合 海上油气 流致振动 |
| 收稿时间： | 2021/8/2 0:00:00 |
Research on the fluid-structure interaction between curved flexible riser and the gas-liquid two-phase flow |
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| GAO Yue,ZHU Hongjun,WANG Kenan,YAN Zhiyin,HU Jie.Research on the fluid-structure interaction between curved flexible riser and the gas-liquid two-phase flow[J].Ocean Engineering,2022,40(1):39-49. |
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| Authors: | GAO Yue ZHU Hongjun WANG Kenan YAN Zhiyin HU Jie |
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| Institution: | Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China;Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China;State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China;China Offshore Oil Engineering Corporation, Tianjin 300452, China;Natural Gas Purification Plant, PetroChina Southwest Oil and Gasfield Company, Chongqing 400021, China |
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| Abstract: | The mechanism of two-way fluid-structure interaction between two-phase flow and offshore risers is significantly complicated in the blending transportation of crude oil and natural gas. A series of tests are conducted in an air-water test loop to examine the flow characteristics of gas-liquid two-phase flow in different flow regimes and the excited response of a curved flexible riser with aspect ratio of 180. The non-intrusive method with two high-speed cameras is employed to capture the vibration displacements of the riser as well as the internal flow characteristics. The effect of vibration on the internal flow is evaluated from the flow characteristics in comparison with a fixed riser. The bubbly flow, bubbly-slug flow, slug flow, slug-churn flow and churn flow patterns are identified in the tests. The mechanism of flow-induced vibration varies with the flow regime. The most violent response is observed when the slug-churn flow passes through the riser. Compared to the fixed riser, the boundaries of several flow regimes are altered due to the vibration. Among the five regimes, the influence of vibration on the bubbly flow and churn flow is relatively small. |
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| Keywords: | flexible riser gas-liquid two-phase flow fluid-structure interaction offshore oil and gas flow-induced vibration |
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