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Bottom air diffusion in flow re-attachment downstream a chute aerator.

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Title: Bottom air diffusion in flow re-attachment downstream a chute aerator.
Authors: Wei, Wangru1 (AUTHOR) wangru_wei@hotmail.com, Deng, Jun1 (AUTHOR), Liu, Chao1 (AUTHOR), Ye, Fangzhou1 (AUTHOR), Xu, Weilin1 (AUTHOR)
Source: Journal of Hydraulic Research / Journal de Recherches Hydraulique. Jun2026, Vol. 64 Issue 3, p489-495. 7p.
Subjects: Aerated water flow, Bubble dynamics, Laboratory techniques, Flow separation
Abstract: Bottom air diffusion caused by separation and re-attachment processes is a typical flow feature downstream of chute aerators. A rapid air–water mixture process occurs during bubble count and size evolution as the entrained air diffuses cross-sectionally from the chute bottom. In this study laboratory experiments are conducted to investigate the air diffusion in the flow re-attachment region. According to the separation of the extremal maximum air concentration near the bottom of the chute, the air diffusion patterns can be divided into lower and upper parts. For the lower part close to the bottom, the coupling effects of the increase in the bubble count and size result in an increase in the air concentration, and the bubble count is more dominant than the slight increase in the bubble size. In the upper part, the air concentration decreases, accompanied by an increase in bubble size and a reduction in bubble count. The uniform pattern of the cross-sectional air diffusion is independent of the aerated flow re-attachment process. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Hydraulic Research / Journal de Recherches Hydraulique is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 194489725
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Bottom air diffusion in flow re-attachment downstream a chute aerator.
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  Data: <searchLink fieldCode="AR" term="%22Wei%2C+Wangru%22">Wei, Wangru</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangru_wei@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Deng%2C+Jun%22">Deng, Jun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Chao%22">Liu, Chao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ye%2C+Fangzhou%22">Ye, Fangzhou</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Weilin%22">Xu, Weilin</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Hydraulic+Research+%2F+Journal+de+Recherches+Hydraulique%22">Journal of Hydraulic Research / Journal de Recherches Hydraulique</searchLink>. Jun2026, Vol. 64 Issue 3, p489-495. 7p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Aerated+water+flow%22">Aerated water flow</searchLink><br /><searchLink fieldCode="DE" term="%22Bubble+dynamics%22">Bubble dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Laboratory+techniques%22">Laboratory techniques</searchLink><br /><searchLink fieldCode="DE" term="%22Flow+separation%22">Flow separation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Bottom air diffusion caused by separation and re-attachment processes is a typical flow feature downstream of chute aerators. A rapid air–water mixture process occurs during bubble count and size evolution as the entrained air diffuses cross-sectionally from the chute bottom. In this study laboratory experiments are conducted to investigate the air diffusion in the flow re-attachment region. According to the separation of the extremal maximum air concentration near the bottom of the chute, the air diffusion patterns can be divided into lower and upper parts. For the lower part close to the bottom, the coupling effects of the increase in the bubble count and size result in an increase in the air concentration, and the bubble count is more dominant than the slight increase in the bubble size. In the upper part, the air concentration decreases, accompanied by an increase in bubble size and a reduction in bubble count. The uniform pattern of the cross-sectional air diffusion is independent of the aerated flow re-attachment process. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Hydraulic Research / Journal de Recherches Hydraulique is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194489725
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/00221686.2026.2638869
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 7
        StartPage: 489
    Subjects:
      – SubjectFull: Aerated water flow
        Type: general
      – SubjectFull: Bubble dynamics
        Type: general
      – SubjectFull: Laboratory techniques
        Type: general
      – SubjectFull: Flow separation
        Type: general
    Titles:
      – TitleFull: Bottom air diffusion in flow re-attachment downstream a chute aerator.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Wei, Wangru
      – PersonEntity:
          Name:
            NameFull: Deng, Jun
      – PersonEntity:
          Name:
            NameFull: Liu, Chao
      – PersonEntity:
          Name:
            NameFull: Ye, Fangzhou
      – PersonEntity:
          Name:
            NameFull: Xu, Weilin
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      – BibEntity:
          Dates:
            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00221686
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              Value: 64
            – Type: issue
              Value: 3
          Titles:
            – TitleFull: Journal of Hydraulic Research / Journal de Recherches Hydraulique
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