Dimond, Benjamin und Costantini, Marco und Klein, Christian (2024) Direct Determination of Intermittency Distribution with Fast-Response Temperature-Sensitive Paint. In: 24. STAB-DGLR-Symposium 2024, Seiten 148-149. 24. STAB-DGLR-Symposium 2024, 2024-11-13 - 2024-11-14, Regensburg, DE.
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Offizielle URL: https://www.dlr.de/de/as/aktuelles/veranstaltungen/stab/2024/stab-jahresbericht_2024.pdf
Kurzfassung
The focus of this work is the direct determination of intermittency with the help of a Ru(phen)-based fast response temperature-sensitive paint (iTSP) for a high Reynolds number flow and the comparison with surface temperature distribution, average heat-flux and standard deviation of surface temperature σT that are often used to determine the transition location. The studies have been conducted in the low-turbulence (Tupu ~ 0.06 %) Cryogenic Ludwieg-Tube Goettingen (KRG) at a large chord Reynolds numbers (7.5 Million) and Mach number 0.8 with an angle-of-attack (AoA) of -2.1° (favourable pressure gradient). The main part of the model is instrumented with iTSP on the port side and hot-films on the starboard side (18 hot-films staggered at 35°). The iTSP observation area (32 x 55 mm²) is recorded at a frequency of 20 kHz. With the known thermal properties of the model and iTSP coating and the accurate timeresolved surface temperature measurement, the instantaneous heat-flux distribution can be determined. This in turn is then used to distinguish laminar and turbulent boundary layers at a given time and surface location and with it the intermittency distribution.
elib-URL des Eintrags: | https://elib.dlr.de/209043/ | ||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
Titel: | Direct Determination of Intermittency Distribution with Fast-Response Temperature-Sensitive Paint | ||||||||||||||||
Autoren: |
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Datum: | November 2024 | ||||||||||||||||
Erschienen in: | 24. STAB-DGLR-Symposium 2024 | ||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||
Open Access: | Nein | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||
Seitenbereich: | Seiten 148-149 | ||||||||||||||||
Name der Reihe: | Jahresbericht | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | Intermittency, Temperature-Sensitive Paint, Laminar-Turbulent Transition | ||||||||||||||||
Veranstaltungstitel: | 24. STAB-DGLR-Symposium 2024 | ||||||||||||||||
Veranstaltungsort: | Regensburg, DE | ||||||||||||||||
Veranstaltungsart: | nationale Konferenz | ||||||||||||||||
Veranstaltungsbeginn: | 13 November 2024 | ||||||||||||||||
Veranstaltungsende: | 14 November 2024 | ||||||||||||||||
Veranstalter : | STAB/DGLR | ||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||
HGF - Programmthema: | Effizientes Luftfahrzeug | ||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||
DLR - Forschungsgebiet: | L EV - Effizientes Luftfahrzeug | ||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtuelles Flugzeug und Validierung | ||||||||||||||||
Standort: | Göttingen | ||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO | ||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||
Hinterlegt am: | 04 Dez 2024 15:55 | ||||||||||||||||
Letzte Änderung: | 04 Dez 2024 15:55 |
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