Experimental hydraulic characteristics of a reverse vertical vortex within a vertical outlet pipe

IF 4 3区工程技术

Journal of Hydrodynamics Pub Date : 2025-11-04 DOI:10.1007/s42241-025-0060-z

Miao Guo, Zi-hao Huang, Yan Shen, Wei Wang, Xiao-qin Li, Xue-lin Tang

{"title":"Experimental hydraulic characteristics of a reverse vertical vortex within a vertical outlet pipe","authors":"Miao Guo, Zi-hao Huang, Yan Shen, Wei Wang, Xiao-qin Li, Xue-lin Tang","doi":"10.1007/s42241-025-0060-z","DOIUrl":null,"url":null,"abstract":"<div>In this paper, the dynamic characteristics of a vertical vortex are examined by the theoretical method and the particle image velocimetry (PIV) technology. The results of the theoretical analysis validate that the main parameters of the vertical vortex are the Reynolds number Re, water level WL* and velocity circulation ΓN. The experimental results indicate that, for the same Re, the low water levels are responsible for an intensive vortex intensity (maximum vorticity), but for a high-water level, water level is no longer a significant influencing factor on vortex intensity. The ΓN number increases with the rising of the Reynolds number Re and drops with the height of measurement section enhance for a low water level case. For the higher WL*, ΓN does not decrease significantly. The formation and evolution of the vertical vortex in the present paper can be utilized or restrained by controlling the relevant dynamic parameters. Obtained research results may provide an important reference for engineering applications with possible occurrence of vertical vortex phenomenon.</div>","PeriodicalId":637,"journal":{"name":"Journal of Hydrodynamics","volume":"37 4","pages":"759 - 769"},"PeriodicalIF":4.0000,"publicationDate":"2025-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydrodynamics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s42241-025-0060-z","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

In this paper, the dynamic characteristics of a vertical vortex are examined by the theoretical method and the particle image velocimetry (PIV) technology. The results of the theoretical analysis validate that the main parameters of the vertical vortex are the Reynolds number Re, water level WL* and velocity circulation Γ_N. The experimental results indicate that, for the same Re, the low water levels are responsible for an intensive vortex intensity (maximum vorticity), but for a high-water level, water level is no longer a significant influencing factor on vortex intensity. The Γ_N number increases with the rising of the Reynolds number Re and drops with the height of measurement section enhance for a low water level case. For the higher WL*, Γ_N does not decrease significantly. The formation and evolution of the vertical vortex in the present paper can be utilized or restrained by controlling the relevant dynamic parameters. Obtained research results may provide an important reference for engineering applications with possible occurrence of vertical vortex phenomenon.

查看原文本刊更多论文

垂直出口管内反向垂直涡的水力特性实验研究

本文采用理论方法和粒子图像测速（PIV）技术研究了垂直涡旋的动态特性。理论分析结果验证了垂直涡的主要参数为雷诺数Re、水位WL*和速度环流ΓN。实验结果表明，对于相同的Re，低水位对涡强度（最大涡量）有较强的影响，而高水位对涡强度的影响不再显著。在低水位情况下，ΓN数随雷诺数Re的增大而增大，随测量断面高度的增大而减小。当WL*较高时，ΓN没有明显下降。本文中垂直涡的形成和演化可以通过控制相关的动力学参数来加以利用或抑制。所得研究结果可为可能发生垂直涡现象的工程应用提供重要参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Hydrodynamics MECHANICS-

自引率

12.00%

发文量

2374

审稿时长

4.6 months

期刊介绍： Journal of Hydrodynamics is devoted to the publication of original theoretical, computational and experimental contributions to the all aspects of hydrodynamics. It covers advances in the naval architecture and ocean engineering, marine and ocean engineering, environmental engineering, water conservancy and hydropower engineering, energy exploration, chemical engineering, biological and biomedical engineering etc.