Petroleum Science >2022,??lssue 5:??- DOI: https://doi.org/10.1016/j.petsci.2022.04.001
Experimental investigation of tubing collar's influence on hydrodynamic behavior of annular duct flow Open?Access
文章信息
作者：Yi-Su Zhou, Zhong-Wei Huang, Zhuang-Zhuang Zhang, Tian-Wen Jiang, Rui-Yue Yang, Ming-He Zhang
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引用方式：Yi-Su Zhou, Zhong-Wei Huang, Zhuang-Zhuang Zhang, Tian-Wen Jiang, Rui-Yue Yang, Ming-He Zhang, Experimental investigation of tubing collar's influence on hydrodynamic behavior of annular duct flow, Petroleum Science, Volume 19, Issue 5, 2022, Pages 2326-2342, https://doi.org/10.1016/j.petsci.2022.04.001
文章摘要
Abstract: Tubing collars’ influence on hydrodynamic behavior of annular duct flow has been investigated using Particle Image Velocity (PIV) technology. PIV has become an efficient method for complex transient flows visualization. A water flow loop with two replaceable variable cross-sections (VCS), 75–90?mm and 90–110?mm, in a 129?mm inner diameter (ID) pipe was used. The whole field of the variable cross-section annulus (VCSA) was visualized, including forward-facing step (FFS), narrow annulus (NA), and backward-facing step (BFS) flow. The VCSA ratio and Reynolds (Re) number influence on streamline distribution, velocity distribution, and turbulence intensity were discussed. Results showed that the recirculation is easier to form in BFS than FFS flow under the same condition. The VCSA ratio affects the formation of recirculation zones and the location of the reattachment point. Reynolds number mainly affects BFS flow by influencing the main velocity component - axial velocity. The turbulence intensity is relatively high in BFS than FFS flow and is larger at y/h>1.0 than y/h<1.0. Furthermore, the streamwise coherent structures reveal that the first two modes are predominant and represent the main characteristics of the flow by proper orthogonal decomposition (POD) method.
關鍵詞
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Keywords: Variable cross-section annulus flow; Sudden contraction and expansion; Hydrodynamic behavior; PIV; POD