| Download | - View final version: Isolating influences of varying pitch from the effects of non-zero compound angles on effusion cooling (PDF, 2.4 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1017/aer.2024.108 |
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| Author | Search for: Pyo, Y.1ORCID identifier: https://orcid.org/0009-0001-7614-8947; Search for: Son, J.1; Search for: Richer, P.ORCID identifier: https://orcid.org/0009-0007-4294-2142; Search for: Jodoin, B.ORCID identifier: https://orcid.org/0000-0003-3194-3549; Search for: Broumand, M.1ORCID identifier: https://orcid.org/0000-0003-4601-0370; Search for: Yun, S.1ORCID identifier: https://orcid.org/0000-0001-8028-0214; Search for: Hong, Z.1ORCID identifier: https://orcid.org/0000-0002-6622-5830 |
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| Affiliation | - National Research Council Canada. Aerospace
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| Format | Text, Article |
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| Subject | gas turbine; film cooling; effusion cooling; AFE (adiabatic film cooling effectiveness); PSP (pressure sensitive paint); compound angle; pitch |
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| Abstract | Effusion cooling is the state-of-the-art cooling technology for gas turbine hot-gas path components. Typically, effusion cooling holes across the entire combustor liner are aligned with the combustor axis, rendering a nominal zero compound angle between highly directional miniature effusion cooling jets and the main flow direction. The pitch of effusion cooling holes is optimised accordingly. However, the swirling main flow results in a non-zero compound angle and an effectively different pitch from the design. The directional effect of effusion cooling as a result of swirling main flow on the adiabatic film cooling effectiveness (AFE) is a combined effect of a non-zero compound angle and a varied pitch. The current experimental study aims to investigate the isolated effects of compound angle on AFE by excluding the influences of varying pitch. With an improved understanding of the sole effects of non-zero compound angles on AFE, the roles that a varied pitch plays in modifying AFE are further discussed to guide future effusion cooling designs under swirling main flow conditions. Binary pressure sensitive paint (PSP) was used to determine AFE experimentally. |
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| Publication date | 2024-11-08 |
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| Publisher | Cambridge University Press |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | S0001924024001088 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 302e48d9-9998-47a7-b5ad-13e1c56a285e |
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| Record created | 2025-09-09 |
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| Record modified | 2025-09-10 |
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