Numerical study on the icing hazard zone of engine intake components under anti-icing conditions.

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Title: Numerical study on the icing hazard zone of engine intake components under anti-icing conditions.
Authors: Jing, Shuliang1 (AUTHOR), Hu, Yaping1 (AUTHOR) hyp@nuaa.edu.cn, Xu, Jing1 (AUTHOR), Jiang, Yuetao1 (AUTHOR), Zheng, Weiliang1 (AUTHOR), Du, Yaxin1 (AUTHOR)
Source: Cold Regions Science & Technology. Jul2026, Vol. 248, pN.PAG-N.PAG. 1p.
Subjects: Ice prevention & control, Computer simulation, Atmospheric temperature, Altitudes
Abstract: In accordance with Clause 33.68 of the China Aeroengine Airworthiness Advisory Circular , computational cases are selected based on the icing envelope, engine operating envelope, and compressor working performance. A three-dimensional numerical simulation of hot-air anti-icing is performed on a full-loop realistic configuration model of the engine intake components, which includes the intake ducts, intake casing, struts, axial flow casing, and zero-stage guide vanes. Based on computational results regarding the effects of engine operating state, altitude, and ambient temperature on anti-icing characteristics, the icing hazard zones under anti-icing conditions are identified. The results indicate that for the studied engine intake components and their hot-air anti-icing cavity structure, three distinct icing hazard zones exist under anti-icing conditions: within the icing envelope at an altitude of 0 km, with ambient temperatures ranging from 261.15 K to 265.15 K and from 243.15 K to 248.15 K, when the engine operates at ground idle state; and in the left boundary region of the cumulus envelope, with ambient temperatures between 243.15 K and 253.15 K, when the engine operates at maximum continuous state. This research provides valuable insights for the analysis of icing critical point analysis and airworthiness certification tests of aeroengines. • The research object is the full-ring real engine intake components and its hot-air anti-icing system. • The numerical simulation of hot-air anti-icing considering the full physical process is carried out. • The computational cases are selected by considering the matching and restriction among various parameters. • Combined with the effects of engine operating state, altitude and ambient temperature, the icing hazard zone is determined. [ABSTRACT FROM AUTHOR]
Copyright of Cold Regions Science & Technology is the property of Elsevier B.V. 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.)
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DbLabel: Engineering Source
An: 193753700
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Numerical study on the icing hazard zone of engine intake components under anti-icing conditions.
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  Data: <searchLink fieldCode="AR" term="%22Jing%2C+Shuliang%22">Jing, Shuliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Yaping%22">Hu, Yaping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hyp@nuaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xu%2C+Jing%22">Xu, Jing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Yuetao%22">Jiang, Yuetao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zheng%2C+Weiliang%22">Zheng, Weiliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Du%2C+Yaxin%22">Du, Yaxin</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Cold+Regions+Science+%26+Technology%22">Cold Regions Science & Technology</searchLink>. Jul2026, Vol. 248, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Ice+prevention+%26+control%22">Ice prevention & control</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+temperature%22">Atmospheric temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Altitudes%22">Altitudes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In accordance with Clause 33.68 of the China Aeroengine Airworthiness Advisory Circular , computational cases are selected based on the icing envelope, engine operating envelope, and compressor working performance. A three-dimensional numerical simulation of hot-air anti-icing is performed on a full-loop realistic configuration model of the engine intake components, which includes the intake ducts, intake casing, struts, axial flow casing, and zero-stage guide vanes. Based on computational results regarding the effects of engine operating state, altitude, and ambient temperature on anti-icing characteristics, the icing hazard zones under anti-icing conditions are identified. The results indicate that for the studied engine intake components and their hot-air anti-icing cavity structure, three distinct icing hazard zones exist under anti-icing conditions: within the icing envelope at an altitude of 0 km, with ambient temperatures ranging from 261.15 K to 265.15 K and from 243.15 K to 248.15 K, when the engine operates at ground idle state; and in the left boundary region of the cumulus envelope, with ambient temperatures between 243.15 K and 253.15 K, when the engine operates at maximum continuous state. This research provides valuable insights for the analysis of icing critical point analysis and airworthiness certification tests of aeroengines. • The research object is the full-ring real engine intake components and its hot-air anti-icing system. • The numerical simulation of hot-air anti-icing considering the full physical process is carried out. • The computational cases are selected by considering the matching and restriction among various parameters. • Combined with the effects of engine operating state, altitude and ambient temperature, the icing hazard zone is determined. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Cold Regions Science & Technology is the property of Elsevier B.V. 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:
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      – Type: doi
        Value: 10.1016/j.coldregions.2026.104943
    Languages:
      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
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      – SubjectFull: Ice prevention & control
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Atmospheric temperature
        Type: general
      – SubjectFull: Altitudes
        Type: general
    Titles:
      – TitleFull: Numerical study on the icing hazard zone of engine intake components under anti-icing conditions.
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          Name:
            NameFull: Jing, Shuliang
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            NameFull: Hu, Yaping
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            NameFull: Xu, Jing
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            NameFull: Jiang, Yuetao
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            NameFull: Zheng, Weiliang
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            NameFull: Du, Yaxin
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            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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              Value: 248
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