View in EDS

Experimental hydraulic study for the effect of radial gates operation scheme on flow characteristics.

Saved in:
Bibliographic Details
Title: Experimental hydraulic study for the effect of radial gates operation scheme on flow characteristics.
Authors: Ibraheem, Ahmed M.1 (AUTHOR) eng.ahmedmahmoud2009@yahoo.com, Ibrahim, Mohamed M.2 (AUTHOR)
Source: ISH Journal of Hydraulic Engineering. Feb2026, Vol. 32 Issue 1, p122-141. 20p.
Subjects: Discharge coefficient, Fluid flow, Hydraulic control systems, Weirs, Gating system (Founding), Hydraulic measurements, Hydraulic jump, Statistical models
Abstract: The Egyptian irrigation system considers barrage regulators important structures for controlling flow discharge and upstream/downstream water levels. This study presents an experimental model simulating flow across radial gates, focusing on how symmetric and asymmetric gate operation schemes influence hydraulic behavior. A total of 80 test runs were performed using five gate-operating schemes under 16 flow conditions, including four tailwater depths (0.21, 0.23, 0.25, and 0.27 m) and four discharges (26, 29, 32, and 35 L/s), while maintaining a constant upstream depth of 0.40 m. Results showed good agreement between measured and calculated discharge coefficients compared with previous studies. Gate operation symmetry, under similar expansion ratios, had minimal effect on the discharge coefficient. The contraction coefficient was inversely related to the gate leaf angle. The length of the hydraulic jump increased with the increase in the Froude number. The outcomes gave good agreement compared to other formulas under similar hydraulic conditions. The submergence ratio increased with the increase in the submerged hydraulic jump length. A regression analysis model was applied, and simple empirical equations were derived to predict the discharge coefficient and the hydraulic jump length under limited flow conditions. [ABSTRACT FROM AUTHOR]
Copyright of ISH Journal of Hydraulic Engineering 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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 191178689
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Experimental hydraulic study for the effect of radial gates operation scheme on flow characteristics.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ibraheem%2C+Ahmed+M%2E%22">Ibraheem, Ahmed M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> eng.ahmedmahmoud2009@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Ibrahim%2C+Mohamed+M%2E%22">Ibrahim, Mohamed M.</searchLink><relatesTo>2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22ISH+Journal+of+Hydraulic+Engineering%22">ISH Journal of Hydraulic Engineering</searchLink>. Feb2026, Vol. 32 Issue 1, p122-141. 20p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Discharge+coefficient%22">Discharge coefficient</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+flow%22">Fluid flow</searchLink><br /><searchLink fieldCode="DE" term="%22Hydraulic+control+systems%22">Hydraulic control systems</searchLink><br /><searchLink fieldCode="DE" term="%22Weirs%22">Weirs</searchLink><br /><searchLink fieldCode="DE" term="%22Gating+system+%28Founding%29%22">Gating system (Founding)</searchLink><br /><searchLink fieldCode="DE" term="%22Hydraulic+measurements%22">Hydraulic measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Hydraulic+jump%22">Hydraulic jump</searchLink><br /><searchLink fieldCode="DE" term="%22Statistical+models%22">Statistical models</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The Egyptian irrigation system considers barrage regulators important structures for controlling flow discharge and upstream/downstream water levels. This study presents an experimental model simulating flow across radial gates, focusing on how symmetric and asymmetric gate operation schemes influence hydraulic behavior. A total of 80 test runs were performed using five gate-operating schemes under 16 flow conditions, including four tailwater depths (0.21, 0.23, 0.25, and 0.27 m) and four discharges (26, 29, 32, and 35 L/s), while maintaining a constant upstream depth of 0.40 m. Results showed good agreement between measured and calculated discharge coefficients compared with previous studies. Gate operation symmetry, under similar expansion ratios, had minimal effect on the discharge coefficient. The contraction coefficient was inversely related to the gate leaf angle. The length of the hydraulic jump increased with the increase in the Froude number. The outcomes gave good agreement compared to other formulas under similar hydraulic conditions. The submergence ratio increased with the increase in the submerged hydraulic jump length. A regression analysis model was applied, and simple empirical equations were derived to predict the discharge coefficient and the hydraulic jump length under limited flow conditions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of ISH Journal of Hydraulic Engineering 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=191178689
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/09715010.2025.2591665
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 20
        StartPage: 122
    Subjects:
      – SubjectFull: Discharge coefficient
        Type: general
      – SubjectFull: Fluid flow
        Type: general
      – SubjectFull: Hydraulic control systems
        Type: general
      – SubjectFull: Weirs
        Type: general
      – SubjectFull: Gating system (Founding)
        Type: general
      – SubjectFull: Hydraulic measurements
        Type: general
      – SubjectFull: Hydraulic jump
        Type: general
      – SubjectFull: Statistical models
        Type: general
    Titles:
      – TitleFull: Experimental hydraulic study for the effect of radial gates operation scheme on flow characteristics.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Ibraheem, Ahmed M.
      – PersonEntity:
          Name:
            NameFull: Ibrahim, Mohamed M.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 09715010
          Numbering:
            – Type: volume
              Value: 32
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: ISH Journal of Hydraulic Engineering
              Type: main
ResultId 1