View in EDS HTML Full Text PDF Full Text

Performance Optimization and Vortex Analysis of a Micro-Head Dual-Duct Hydraulic Turbine.

Saved in:
Bibliographic Details
Title: Performance Optimization and Vortex Analysis of a Micro-Head Dual-Duct Hydraulic Turbine.
Authors: Zhou, Xiaoliang1 (AUTHOR), Liu, Zhong1 (AUTHOR), Zou, Shuyun1 (AUTHOR) cslgdxzsy@csust.edu.cn, Yang, Bo1 (AUTHOR), Yu, Zheqin1 (AUTHOR)
Source: Energies (19961073). Feb2026, Vol. 19 Issue 4, p968. 19p.
Subject Terms: *Hydraulic turbines, *Vortex methods, *Mathematical optimization, *Energy consumption, *Flow instability, *Water power, *Computational fluid dynamics
Abstract: In order to solve the technical bottlenecks of low efficiency and high starting flow velocity of traditional turbines in the area of development of micro-head hydropower resources, a new type of hydraulic turbine in which the dual-duct is used was suggested and was structurally optimized to enhance the energy conversion efficiency and operational stability of micro-head hydraulic turbines. By integrating Computational Fluid Dynamics with orthogonal experimental design, the influence of blade inlet angle, blade count, and axial length on the flow field within the turbine and hydraulic performance of the turbine was analyzed systematically, which gave the best runner set-up. Based on vortex analysis, supporting plate-type flow guide ribs were added at the diffuser exit to optimize the vortex structure. The results show that the optimized turbine output increased from 3.38 kW to 3.72 kW with a 10.06% increase, and the efficiency improved to 75.05% with a 18.41% enhancement. In addition, there is a significant wake vortex structure at the outlet of the micro-head dual-duct hydraulic turbine, and the asymmetric layout of three runner blades can achieve better vortex breaking and dissipation effects, improving flow field stability and unit operation reliability. The use of a dual-duct diffuser for micro-head hydropower provides a new technological path for promoting efficient development of micro-head hydraulic resources. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: enr
DbLabel: Energy & Power Source
An: 191973388
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Performance Optimization and Vortex Analysis of a Micro-Head Dual-Duct Hydraulic Turbine.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Zhou%2C+Xiaoliang%22">Zhou, Xiaoliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Zhong%22">Liu, Zhong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zou%2C+Shuyun%22">Zou, Shuyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cslgdxzsy@csust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Bo%22">Yang, Bo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Zheqin%22">Yu, Zheqin</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Feb2026, Vol. 19 Issue 4, p968. 19p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Hydraulic+turbines%22">Hydraulic turbines</searchLink><br />*<searchLink fieldCode="DE" term="%22Vortex+methods%22">Vortex methods</searchLink><br />*<searchLink fieldCode="DE" term="%22Mathematical+optimization%22">Mathematical optimization</searchLink><br />*<searchLink fieldCode="DE" term="%22Energy+consumption%22">Energy consumption</searchLink><br />*<searchLink fieldCode="DE" term="%22Flow+instability%22">Flow instability</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+power%22">Water power</searchLink><br />*<searchLink fieldCode="DE" term="%22Computational+fluid+dynamics%22">Computational fluid dynamics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In order to solve the technical bottlenecks of low efficiency and high starting flow velocity of traditional turbines in the area of development of micro-head hydropower resources, a new type of hydraulic turbine in which the dual-duct is used was suggested and was structurally optimized to enhance the energy conversion efficiency and operational stability of micro-head hydraulic turbines. By integrating Computational Fluid Dynamics with orthogonal experimental design, the influence of blade inlet angle, blade count, and axial length on the flow field within the turbine and hydraulic performance of the turbine was analyzed systematically, which gave the best runner set-up. Based on vortex analysis, supporting plate-type flow guide ribs were added at the diffuser exit to optimize the vortex structure. The results show that the optimized turbine output increased from 3.38 kW to 3.72 kW with a 10.06% increase, and the efficiency improved to 75.05% with a 18.41% enhancement. In addition, there is a significant wake vortex structure at the outlet of the micro-head dual-duct hydraulic turbine, and the asymmetric layout of three runner blades can achieve better vortex breaking and dissipation effects, improving flow field stability and unit operation reliability. The use of a dual-duct diffuser for micro-head hydropower provides a new technological path for promoting efficient development of micro-head hydraulic resources. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=191973388
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/en19040968
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 968
    Subjects:
      – SubjectFull: Hydraulic turbines
        Type: general
      – SubjectFull: Vortex methods
        Type: general
      – SubjectFull: Mathematical optimization
        Type: general
      – SubjectFull: Energy consumption
        Type: general
      – SubjectFull: Flow instability
        Type: general
      – SubjectFull: Water power
        Type: general
      – SubjectFull: Computational fluid dynamics
        Type: general
    Titles:
      – TitleFull: Performance Optimization and Vortex Analysis of a Micro-Head Dual-Duct Hydraulic Turbine.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Zhou, Xiaoliang
      – PersonEntity:
          Name:
            NameFull: Liu, Zhong
      – PersonEntity:
          Name:
            NameFull: Zou, Shuyun
      – PersonEntity:
          Name:
            NameFull: Yang, Bo
      – PersonEntity:
          Name:
            NameFull: Yu, Zheqin
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 15
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 19961073
          Numbering:
            – Type: volume
              Value: 19
            – Type: issue
              Value: 4
          Titles:
            – TitleFull: Energies (19961073)
              Type: main
ResultId 1