| 偏心环空螺旋流的PIV测试研究 |
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| 引用本文： | 邢均,;韩雪松,;韩廷凯,;张艳娟.偏心环空螺旋流的PIV测试研究[J].海洋地质译丛,2009(3):107-112. |
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| 作者姓名： | 邢均 ;韩雪松 ;韩廷凯 ;张艳娟 |
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| 作者单位： | [1]大庆油田工程有限公司,黑龙江大庆163712; [2]大庆油田有限责任公司第三采油厂,黑龙江大庆163113; [3]中国石油辽河油田公司,辽宁盘锦124010 |
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| 摘 要： | 首次将PIV技术应用于测试偏心环空幂律流体紊流螺旋流速度场，设计了一套可调偏心度的垂直环空管道实验装置。实验为不同浓度的聚丙烯酰胺水溶液在偏心度分别为40％和80％的垂直环空管道内做螺旋流动的PIV实验。得到了轴向速度影响规律：压力梯度一定时，黏滞性的减小或内管转速的增加将使轴向速度增大；流量一定时，黏滞性的减小或内管转速的增加都将使宽间隙处紊流核心区的轴向速度减小；偏心度的增大可以使紊流核心区轴向速度减小；当其它条件相同时，轴向速度随着压力梯度或流量的增加而增大。PIV实验结果与PHOENICS数模结果吻合良好。证明了PIV技术对幂律流体偏心环空螺旋流速度场进行测试是可行的、有效的。
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| 关 键 词： | PIV 紊流 轴向速度 螺旋流 环空流动 |
Experimental study on the helical flow in eccentric annulus with PIV technology |
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| Institution: | Xing Jun, Han Xuesong, Han Tingkai, Zhang Yanjuan (1. Daqing Oil Field Engineering Co. , Ltd. , Daqing 163712; 2. No. 3 Oil-Producing Factory of Daqing Oilfield Co. , Ltd., Daqing 163113; 3. PetroChina Liaohe Oilfield Company, Panjin 124010) |
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| Abstract: | The technology of PIV was creatively used in testing velocity field of helical flow of power-law fluid in eccentric annuli. A vertical annulus pipeline device was designed and its eccentricity was changed. Different density polyacrylamide solution of helical flow was tested in the vertical annulus pipeline with the application of PIV, and eccentricity degree of pipeline was 40% and 80%. Laws of axial velocity were obtained. When the pressure gradient was the same, axial velocity was increased by the decrement of viscidity and increment of the inner tube rotational speed. When the flow is the same, the velocity decrement in turbulent flow core area of wide gap was caused by the decrement of viscidity and increment of the inner tube rotational speed. Eccentricity increase may reduce axial velocity of the turbulent flow core area. When other conditions were the same, the axial velocity increased with the pressure gradient increase or the flow increase. The experimental results of PIV is in good accordance with the numerical simulation results of PHOENICS, so the method of testing the axial velocity field of helical flow of power-law fluid using PIV was feasible and effective. |
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| Keywords: | PIV turbulent flow axial velocity helical flow annular flow |
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