Study on Flow and Heat Transfer Characteristics in Lamilloy Structure with Different Configurations of Internal Minichannels.
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| Title: | Study on Flow and Heat Transfer Characteristics in Lamilloy Structure with Different Configurations of Internal Minichannels. |
|---|---|
| Authors: | Yang, Tao1 (AUTHOR) 747416156@qq.com, Zhang, Xiaoming1 (AUTHOR) 1577933864@qq.com, Chang, Zhenyuan1 (AUTHOR), Xu, Liang2 (AUTHOR) xuliang@mail.xjtu.edu.cn, Xi, Lei2 (AUTHOR) xilei100@mail.xjtu.edu.cn, Gao, Jianmin2 (AUTHOR), Kou, Wei1 (AUTHOR), Jing, Xiaochun1 (AUTHOR) |
| Source: | Energies (19961073). Dec2023, Vol. 16 Issue 24, p8058. 18p. |
| Subjects: | Heat transfer, Counterflows (Fluid dynamics), Temperature effect, Coolants |
| Abstract: | This paper proposes a novel lamilloy cooling structure equipped with internal minichannels used in a combustor flame cylinder. The overall flow and heat transfer characteristics of three different internal minichannel configurations (parallel-flow, counter-flow, and staggered arrangements. PF, CF, and SF for short) are analyzed and compared. From the analysis of the heat transfer characteristic, it is found that the CF structure possesses the best cooling effect and temperature uniformity. The average cooling effectiveness (ηave) of the CF structure increased by 20.6% and 20.4%, and the average temperature gradient ( (d T / d X) a v e ) decreased by 76.9% and 32.8%, compared with the SF structure and PF structure, respectively. From the analysis of flow characteristics, the coolant ejected from the minichannel one region of the SF structure completely blocks the direct contact between the mainstream and the lamilloy, while transferring more from the mainstream to the minichannel two region. Different from the SF structure, film cooling at the two outlet of the CF structure transfers most of the mainstream to the lower position, which further improves the cooling effect of the two internal minichannels. [ABSTRACT FROM AUTHOR] |
| Copyright of Energies (19961073) is the property of MDPI 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: 174437637 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Study on Flow and Heat Transfer Characteristics in Lamilloy Structure with Different Configurations of Internal Minichannels. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yang%2C+Tao%22">Yang, Tao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 747416156@qq.com</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xiaoming%22">Zhang, Xiaoming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1577933864@qq.com</i><br /><searchLink fieldCode="AR" term="%22Chang%2C+Zhenyuan%22">Chang, Zhenyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Liang%22">Xu, Liang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> xuliang@mail.xjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xi%2C+Lei%22">Xi, Lei</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> xilei100@mail.xjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Gao%2C+Jianmin%22">Gao, Jianmin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kou%2C+Wei%22">Kou, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jing%2C+Xiaochun%22">Jing, Xiaochun</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Dec2023, Vol. 16 Issue 24, p8058. 18p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Counterflows+%28Fluid+dynamics%29%22">Counterflows (Fluid dynamics)</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br /><searchLink fieldCode="DE" term="%22Coolants%22">Coolants</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper proposes a novel lamilloy cooling structure equipped with internal minichannels used in a combustor flame cylinder. The overall flow and heat transfer characteristics of three different internal minichannel configurations (parallel-flow, counter-flow, and staggered arrangements. PF, CF, and SF for short) are analyzed and compared. From the analysis of the heat transfer characteristic, it is found that the CF structure possesses the best cooling effect and temperature uniformity. The average cooling effectiveness (ηave) of the CF structure increased by 20.6% and 20.4%, and the average temperature gradient ( (d T / d X) a v e ) decreased by 76.9% and 32.8%, compared with the SF structure and PF structure, respectively. From the analysis of flow characteristics, the coolant ejected from the minichannel one region of the SF structure completely blocks the direct contact between the mainstream and the lamilloy, while transferring more from the mainstream to the minichannel two region. Different from the SF structure, film cooling at the two outlet of the CF structure transfers most of the mainstream to the lower position, which further improves the cooling effect of the two internal minichannels. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Energies (19961073) is the property of MDPI 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: 10.3390/en16248058 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 8058 Subjects: – SubjectFull: Heat transfer Type: general – SubjectFull: Counterflows (Fluid dynamics) Type: general – SubjectFull: Temperature effect Type: general – SubjectFull: Coolants Type: general Titles: – TitleFull: Study on Flow and Heat Transfer Characteristics in Lamilloy Structure with Different Configurations of Internal Minichannels. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yang, Tao – PersonEntity: Name: NameFull: Zhang, Xiaoming – PersonEntity: Name: NameFull: Chang, Zhenyuan – PersonEntity: Name: NameFull: Xu, Liang – PersonEntity: Name: NameFull: Xi, Lei – PersonEntity: Name: NameFull: Gao, Jianmin – PersonEntity: Name: NameFull: Kou, Wei – PersonEntity: Name: NameFull: Jing, Xiaochun IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 12 Text: Dec2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 16 – Type: issue Value: 24 Titles: – TitleFull: Energies (19961073) Type: main |
| ResultId | 1 |
