Franco Sumariva, Juan Alberto und Paul Panuthara, John und Heinritz, Yannik und Hein, Stefan (2023) INFLUENCE OF SURFACE IMPERFECTIONS WITH SLIGHTLY ROUNDED CORNERS ON THE EXPECTED LAMINAR-TURBULENCE TRANSITION LOCATION. In: ERCOFTAC Series. 15th ERCOFTAC SIG 33 Workshop, Progress in Flow Instability, Transition and Control, 2023-06-28 - 2023-06-30, Alghero, Sardinia, Italy. ISSN 1382-4309.
![]() |
PDF
- Nur DLR-intern zugänglich
374kB |
Offizielle URL: https://www.ercoftac-sig33.conf.kth.se/
Kurzfassung
The presence of surface imperfections on aerodynamics devices, such as steps or gaps of height/depth h comparable with the local boundary-layer displacement thickness δ∗, might alter the spatial development of linear mechanisms that trigger the laminar-turbulent transition process, such as Tollmien-Schlichting (TS) waves or Crossflow Instabilities (CFI). Traditionally, the numerical studies for such configurations assumed that the geometry of the surface imperfections is rectangular at the corners. However, an initial work by Zahn and Rist [1] showed the tremendous impact on the computed N -factor envelope curves if the edge of the corner is slightly distorted. Despite this, no parametric studies have been conducted in order to better quantify the impact of such modelling of the step geometry.
elib-URL des Eintrags: | https://elib.dlr.de/195927/ | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
Titel: | INFLUENCE OF SURFACE IMPERFECTIONS WITH SLIGHTLY ROUNDED CORNERS ON THE EXPECTED LAMINAR-TURBULENCE TRANSITION LOCATION | ||||||||||||||||||||
Autoren: |
| ||||||||||||||||||||
Datum: | 30 Juni 2023 | ||||||||||||||||||||
Erschienen in: | ERCOFTAC Series | ||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Herausgeber: |
| ||||||||||||||||||||
ISSN: | 1382-4309 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | laminar, transition, step, AHLNS | ||||||||||||||||||||
Veranstaltungstitel: | 15th ERCOFTAC SIG 33 Workshop, Progress in Flow Instability, Transition and Control | ||||||||||||||||||||
Veranstaltungsort: | Alghero, Sardinia, Italy | ||||||||||||||||||||
Veranstaltungsart: | Workshop | ||||||||||||||||||||
Veranstaltungsbeginn: | 28 Juni 2023 | ||||||||||||||||||||
Veranstaltungsende: | 30 Juni 2023 | ||||||||||||||||||||
Veranstalter : | ERCOFTAC | ||||||||||||||||||||
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 - Flugzeugtechnologien und Integration | ||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Hochgeschwindigkeitskonfigurationen, GO | ||||||||||||||||||||
Hinterlegt von: | Franco, Juan | ||||||||||||||||||||
Hinterlegt am: | 09 Aug 2023 11:57 | ||||||||||||||||||||
Letzte Änderung: | 30 Jul 2024 15:56 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags