Brakmann, Robin und Brose, Nina und Carvalho, Francisco und Chargui, Safae und Guarino, Roberto (2023) A NUMERICAL ANALYSIS OF CROSS-FLOW REINFORCED IMPINGEMENT COOLING WITH A U-SHAPED FLOW-GUIDE ON THE HOLE PLATE. In: ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023. Proceedings of ASME 2023 Turbomachinery Technical Conference, 2023-06-26 - 2023-06-30, Boston, MA, United States of America. doi: 10.1115/GT2023-101097.
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Offizielle URL: https://asmedigitalcollection.asme.org/GT/proceedings-abstract/GT2023/87011/V07BT15A003/1168164
Kurzfassung
Impingement cooling offers an efficient usage of cooling air in order to obtain high heat transfer rates. In this study a U-shaped turbulator is installed downstream of the jet hole. This arrangement uses the cross-flow to reinforce the jet by guiding it into the adjacent jet and thus increasing its effective jet Reynolds number. Compared to a smooth channel configuration, the Nusselt number on the target can be increased by 5–16% without a significant change in the pressure loss. This is a purely aerodynamic effect and is not caused by increasing the area of the heat exchanging surface. The geometry represents a generic impingement cooling configuration with a row of nine inline impingement jets. All jets are influenced by a self-induced cross-flow. The jet-to-plate spacing as well as jet pitch are set to 5D and the curved U-shape ribs are installed downstream of the jet on the hole plate. The RANS simulations are performed with the SST turbulence model. The effects of different jet-to-plate spacing, jet Reynolds number as well as rib height, position and shape are investigated numerically. The effectiveness of the U-shaped turbulator is discussed in combination with additional turbulators (from the literature). This paper concludes with a recommended set of rib and impingement parameters for the usage of the U-shaped turbulator in gas turbine cooling designs. A discussion of the manufacturability by Selective Laser Melting is included.
elib-URL des Eintrags: | https://elib.dlr.de/199423/ | ||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||
Titel: | A NUMERICAL ANALYSIS OF CROSS-FLOW REINFORCED IMPINGEMENT COOLING WITH A U-SHAPED FLOW-GUIDE ON THE HOLE PLATE | ||||||||||||||||||||||||
Autoren: |
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Datum: | Juni 2023 | ||||||||||||||||||||||||
Erschienen in: | ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023 | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
DOI: | 10.1115/GT2023-101097 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | Heat transfer, CFD, PIV, Impingement cooling, Prallkühlung, Turbine, Kühlung, cooling, internal cooling | ||||||||||||||||||||||||
Veranstaltungstitel: | Proceedings of ASME 2023 Turbomachinery Technical Conference | ||||||||||||||||||||||||
Veranstaltungsort: | Boston, MA, United States of America | ||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||
Veranstaltungsbeginn: | 26 Juni 2023 | ||||||||||||||||||||||||
Veranstaltungsende: | 30 Juni 2023 | ||||||||||||||||||||||||
Veranstalter : | ASME | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||
HGF - Programm: | Materialien und Technologien für die Energiewende | ||||||||||||||||||||||||
HGF - Programmthema: | Thermische Hochtemperaturtechnologien | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | E VS - Verbrennungssysteme | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Verbrennungs- und Kraftwerkssysteme | ||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Antriebstechnik > Turbine | ||||||||||||||||||||||||
Hinterlegt von: | Brakmann, Robin | ||||||||||||||||||||||||
Hinterlegt am: | 28 Nov 2023 13:35 | ||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 21:00 |
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