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Investigation of flow characteristics and mixing of liquid hydrogen within a premixing swirl tube for the turbine engine combustor.

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Title: Investigation of flow characteristics and mixing of liquid hydrogen within a premixing swirl tube for the turbine engine combustor.
Authors: Adam, Abdalazeem1,2 (AUTHOR) abdalazeem@nuaa.edu.cn, He, Weifeng1 (AUTHOR) wfhe@nuaa.edu.cn, Fan, Yuxin1 (AUTHOR), Han, Dong1 (AUTHOR)
Source: International Journal of Hydrogen Energy. Jan2024:Part B, Vol. 49, p367-383. 17p.
Subjects: Liquid hydrogen, Swirling flow, Spray nozzles, Air-fuel ratio, Combustion efficiency, Hydrogen as fuel, Combustion chambers
Abstract: This article explores the flow characteristics and fuel mixing in a premixed tube leading to the combustion chamber, focusing on hydrogen fuel. A CFD simulation utilizing a discrete phase model (DPM) was conducted to investigate the impact of spray angle, spray pressure, and fuel-to-air ratio on fuel atomization, fragmentation, and fuel-air mixing efficiency. The findings highlight the critical role of the spray angle in fuel atomization and breakup. Increasing the spray angle enhances atomization, resulting in smaller fuel droplet sizes and improved fuel-air mixing. The particle diameters ranged from 165 μm to 117 μm for spray angles of 15°–60°, respectively. Additionally, spray pressure significantly influences particle diameter, velocity, and turbulent kinetic energy. Higher spray pressures promote efficient atomization, fragmentation, and smaller particle sizes, enhancing fuel dispersion and mixing. The fuel-to-air ratio also plays a crucial role, with lean mixtures (0.0003 kg/s of fuel flow rate) facilitating increased fuel-air mixing and smaller droplet sizes. Furthermore, the swirl motion induced by airflow and lower fuel-to-air ratios enhances fuel atomization and breakup, resulting in finer spray characteristics. These insights contribute to optimizing spray angle, pressure, and fuel-to-air ratio, ultimately improving fuel injection systems, combustion efficiency, and emissions reduction across various applications. • Investigated flow characteristics & fuel mixing in premixed tube for hydrogen fuel. • The particle diameters decreased from 165 μm to 117 μm at spray angle of 60°. • Higher spray pressure promotes efficient atomization & smaller particle sizes. • Particle diameter of 98 μm was obtained at pressure of 2 MPa. • Swirl motion & lower fuel-air ratio of 0.3 g/s enhance breakup & fuel-air mixing. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science 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: 174104418
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Investigation of flow characteristics and mixing of liquid hydrogen within a premixing swirl tube for the turbine engine combustor.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Adam%2C+Abdalazeem%22">Adam, Abdalazeem</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> abdalazeem@nuaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22He%2C+Weifeng%22">He, Weifeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wfhe@nuaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Fan%2C+Yuxin%22">Fan, Yuxin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Dong%22">Han, Dong</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Jan2024:Part B, Vol. 49, p367-383. 17p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Liquid+hydrogen%22">Liquid hydrogen</searchLink><br /><searchLink fieldCode="DE" term="%22Swirling+flow%22">Swirling flow</searchLink><br /><searchLink fieldCode="DE" term="%22Spray+nozzles%22">Spray nozzles</searchLink><br /><searchLink fieldCode="DE" term="%22Air-fuel+ratio%22">Air-fuel ratio</searchLink><br /><searchLink fieldCode="DE" term="%22Combustion+efficiency%22">Combustion efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+as+fuel%22">Hydrogen as fuel</searchLink><br /><searchLink fieldCode="DE" term="%22Combustion+chambers%22">Combustion chambers</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This article explores the flow characteristics and fuel mixing in a premixed tube leading to the combustion chamber, focusing on hydrogen fuel. A CFD simulation utilizing a discrete phase model (DPM) was conducted to investigate the impact of spray angle, spray pressure, and fuel-to-air ratio on fuel atomization, fragmentation, and fuel-air mixing efficiency. The findings highlight the critical role of the spray angle in fuel atomization and breakup. Increasing the spray angle enhances atomization, resulting in smaller fuel droplet sizes and improved fuel-air mixing. The particle diameters ranged from 165 μm to 117 μm for spray angles of 15°–60°, respectively. Additionally, spray pressure significantly influences particle diameter, velocity, and turbulent kinetic energy. Higher spray pressures promote efficient atomization, fragmentation, and smaller particle sizes, enhancing fuel dispersion and mixing. The fuel-to-air ratio also plays a crucial role, with lean mixtures (0.0003 kg/s of fuel flow rate) facilitating increased fuel-air mixing and smaller droplet sizes. Furthermore, the swirl motion induced by airflow and lower fuel-to-air ratios enhances fuel atomization and breakup, resulting in finer spray characteristics. These insights contribute to optimizing spray angle, pressure, and fuel-to-air ratio, ultimately improving fuel injection systems, combustion efficiency, and emissions reduction across various applications. • Investigated flow characteristics & fuel mixing in premixed tube for hydrogen fuel. • The particle diameters decreased from 165 μm to 117 μm at spray angle of 60°. • Higher spray pressure promotes efficient atomization & smaller particle sizes. • Particle diameter of 98 μm was obtained at pressure of 2 MPa. • Swirl motion & lower fuel-air ratio of 0.3 g/s enhance breakup & fuel-air mixing. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science 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.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ijhydene.2023.07.330
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 367
    Subjects:
      – SubjectFull: Liquid hydrogen
        Type: general
      – SubjectFull: Swirling flow
        Type: general
      – SubjectFull: Spray nozzles
        Type: general
      – SubjectFull: Air-fuel ratio
        Type: general
      – SubjectFull: Combustion efficiency
        Type: general
      – SubjectFull: Hydrogen as fuel
        Type: general
      – SubjectFull: Combustion chambers
        Type: general
    Titles:
      – TitleFull: Investigation of flow characteristics and mixing of liquid hydrogen within a premixing swirl tube for the turbine engine combustor.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Adam, Abdalazeem
      – PersonEntity:
          Name:
            NameFull: He, Weifeng
      – PersonEntity:
          Name:
            NameFull: Fan, Yuxin
      – PersonEntity:
          Name:
            NameFull: Han, Dong
    IsPartOfRelationships:
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          Dates:
            – D: 03
              M: 01
              Text: Jan2024:Part B
              Type: published
              Y: 2024
          Identifiers:
            – Type: issn-print
              Value: 03603199
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            – Type: volume
              Value: 49
          Titles:
            – TitleFull: International Journal of Hydrogen Energy
              Type: main
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