Low-cost surface particle image velocimetry for hydraulic model studies

IF 1.4 Q4 WATER RESOURCES
Iverson Italo Siebert, Michael Mannich, T. Bleninger
{"title":"Low-cost surface particle image velocimetry for hydraulic model studies","authors":"Iverson Italo Siebert, Michael Mannich, T. Bleninger","doi":"10.1080/23249676.2022.2084165","DOIUrl":null,"url":null,"abstract":"An application of a large-scale PIV technique on a scaled hydraulic model of a hydroelectric powerplant was performed. A detailed study regarding the relationship between the tracer size (paper confetti) and the spatial resolution settings of the statistical correlation program was carried out. The validated parameters and operational procedures were used for the flow characterization in two areas: the spillway approaching area and the tailrace channel. The larger tracer (10 mm diameter) performed better. The manual particle seeding showed to produce negative bias effects in velocity measurements, due to particle agglomeration. The low-cost measurements resulted in velocity field information of a resurgence flow in the tailrace channel measured with only 10 pairs of images. The study showed, as a proof of concept, that hydraulic model studies could easily be complemented with LS-PIV techniques providing spatial and temporal variations of velocity fields for flow analysis with advantages against intrusive point-based measurement techniques.","PeriodicalId":51911,"journal":{"name":"Journal of Applied Water Engineering and Research","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Water Engineering and Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/23249676.2022.2084165","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"WATER RESOURCES","Score":null,"Total":0}
引用次数: 0

Abstract

An application of a large-scale PIV technique on a scaled hydraulic model of a hydroelectric powerplant was performed. A detailed study regarding the relationship between the tracer size (paper confetti) and the spatial resolution settings of the statistical correlation program was carried out. The validated parameters and operational procedures were used for the flow characterization in two areas: the spillway approaching area and the tailrace channel. The larger tracer (10 mm diameter) performed better. The manual particle seeding showed to produce negative bias effects in velocity measurements, due to particle agglomeration. The low-cost measurements resulted in velocity field information of a resurgence flow in the tailrace channel measured with only 10 pairs of images. The study showed, as a proof of concept, that hydraulic model studies could easily be complemented with LS-PIV techniques providing spatial and temporal variations of velocity fields for flow analysis with advantages against intrusive point-based measurement techniques.
用于水力模型研究的低成本表面粒子图像测速技术
将大型PIV技术应用于水电站定标水力模型。对示踪剂尺寸(纸屑)与统计相关程序的空间分辨率设置之间的关系进行了详细研究。已验证的参数和操作程序用于两个区域的流量表征:溢洪道接近区域和尾水渠。较大的示踪剂(直径10mm)表现更好。由于颗粒团聚,手动颗粒播种在速度测量中显示出负偏置效应。低成本的测量结果产生了尾水渠中回流的速度场信息,仅用10对图像进行了测量。该研究表明,作为概念验证,可以很容易地用LS-PIV技术来补充水力模型研究,该技术为流量分析提供速度场的空间和时间变化,与基于侵入点的测量技术相比具有优势。
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
CiteScore
2.90
自引率
16.70%
发文量
31
期刊介绍: JAWER’s paradigm-changing (online only) articles provide directly applicable solutions to water engineering problems within the whole hydrosphere (rivers, lakes groundwater, estuaries, coastal and marine waters) covering areas such as: integrated water resources management and catchment hydraulics hydraulic machinery and structures hydraulics applied to water supply, treatment and drainage systems (including outfalls) water quality, security and governance in an engineering context environmental monitoring maritime hydraulics ecohydraulics flood risk modelling and management water related hazards desalination and re-use.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信