Weinman, K.A. und Ehrenfried, K. (2022) Unsteady onflow effects on model train drag. In: 23rd STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics, STAB. 23. STAB-DGLR-Symposium 2022, 09.-10. Nov. 2022, Berlin,Germany.
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Offizielle URL: https://www.tu.berlin/index.php?id=27890
Kurzfassung
The DLR NGT-Cargo concept aims to increase the rail share of the European freight traffic market. Computational Fluid Dynamics (CFD) is a useful tool in analysing high-speed operations which are an important part of this concept. Standards provide guidelines for CFD assessments at cross-wind conditions using the RANS (Reynolds-averaged Navier-Stokes) equations. The development of aerodynamic forces under unsteady on-flows should be analysed within the context of these standards. A major challenge in satisfying these guidelines arises because of the multi-scale nature of these flows which are characterized by a large range of energetically significant flow scales. Wind-tunnel measurements, focussed on the development of the aerodynamic forces acting on a train, are being currently performed on a 1:25 scaled NGT model in the cross-wind facility Seitenwindversuchsanlage G¨ottingen (SWG) located at the DLR G¨ottingen. A CFD study is running concurrently. The aim of this study is to assess the ability of CFD approaches to reproduce both the observed on-flow conditions as well as the aerodynamic drag of the vehicle. 1
elib-URL des Eintrags: | https://elib.dlr.de/192181/ | ||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||
Titel: | Unsteady onflow effects on model train drag | ||||||||||||
Autoren: |
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Datum: | November 2022 | ||||||||||||
Erschienen in: | 23rd STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Nein | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Band: | STAB | ||||||||||||
Herausgeber: |
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Status: | veröffentlicht | ||||||||||||
Stichwörter: | Computational Fluid Dynamics, comparisons against exerimental drag measurement, force coefficient development, unsteady onflow, Delayed Detached Eddy Simulastio | ||||||||||||
Veranstaltungstitel: | 23. STAB-DGLR-Symposium 2022 | ||||||||||||
Veranstaltungsort: | Berlin,Germany | ||||||||||||
Veranstaltungsart: | nationale Konferenz | ||||||||||||
Veranstaltungsdatum: | 09.-10. Nov. 2022 | ||||||||||||
Veranstalter : | STAB/DGLR | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Verkehr | ||||||||||||
HGF - Programmthema: | Schienenverkehr | ||||||||||||
DLR - Schwerpunkt: | Verkehr | ||||||||||||
DLR - Forschungsgebiet: | V SC Schienenverkehr | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | V - NGT BIT (alt) | ||||||||||||
Standort: | Göttingen | ||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Bodengebundene Fahrzeuge | ||||||||||||
Hinterlegt von: | Weinman, Dr.phil. Keith | ||||||||||||
Hinterlegt am: | 16 Dez 2022 13:24 | ||||||||||||
Letzte Änderung: | 30 Jan 2023 03:00 |
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