elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Aerodynamic optimization of a next-generation freight-train wagon

Buhr, Alexander und Öngüner, Emir und Gries, Torsten und Bell, James und Henning, Arne (2022) Aerodynamic optimization of a next-generation freight-train wagon. In: Railways, Seiten 1-7. 5th International Conference on Railway Technology: Research, Development and Maintenance, 2022-08-22 - 2022-08-25, Montpellier, Frankreich.

[img] PDF - Nur DLR-intern zugänglich
2MB

Offizielle URL: https://app.oxfordabstracts.com/events/2130/program-app/program

Kurzfassung

The research presented focuses on reducing the aerodynamic drag of standard freight wagons by optimizing their geometry to improve energy-efficient operation and reduce the overall carbon footprint. Within the scope of this work, a variety of aerodynamic measures for an improved underbody geometry of conventional freight wagons have been investigated in a wind-tunnel experiment to provide a detailed overview of their effectiveness in drag reduction. The experiments were performed at a Reynolds number of 5.0×10^5 in the Crosswind Simulation Facility at DLR Göttingen with an optimized moving-ground condition simulated by a moving belt. The pivoted mounting system of the model enabled crosswind investigations with yaw angles of the model up to 10°, which corresponds to typical crosswind flow conditions during operation. The simplified geometry of a Lgs580 freight wagon was used as a generic baseline model in a scale of 1:10, to which aerodynamic improvements were added and compared. The aerodynamic drag was evaluated in terms of the aerodynamic forces on the full freight wagon model with container, which were measured with a 6-component strain-gauge balance between the mounting sting and the base plate of the freight wagon model. More than 50 different configurations were measured and further combinations are considered for future measurements in view of the benefits of single measures. Five selected measures are presented here based on the feasibility and the significant effect on the aerodynamic drag. The results have shown that simple, feasible measures like covering of roughness in the base frame design provide a significant decrease in the aerodynamic drag by 8-24%. A full fairing on the underbody was identified as the best aerodynamic measure with a decrease of 31%. The full parametric geometry investigation of the shape and size of aerodynamic fairings and side skirts offers train manufacturers recommendations for optimized wagon design for improvements in energy efficiency of next-generation freight trains.

elib-URL des Eintrags:https://elib.dlr.de/142045/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Aerodynamic optimization of a next-generation freight-train wagon
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Buhr, AlexanderAlexander.Buhr (at) dlr.dehttps://orcid.org/0000-0002-6805-2531NICHT SPEZIFIZIERT
Öngüner, EmirEmir.Oenguener (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Gries, TorstenTorsten.Gries (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Bell, JamesJames.Bell (at) dlr.dehttps://orcid.org/0000-0001-8319-9817NICHT SPEZIFIZIERT
Henning, Arnearne.henning (at) dlr.dehttps://orcid.org/0000-0002-2806-8213NICHT SPEZIFIZIERT
Datum:24 August 2022
Erschienen in:Railways
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Ja
Seitenbereich:Seiten 1-7
Status:veröffentlicht
Stichwörter:railway aerodynamics, freight-train wagon, aerodynamic drag, underbody geometry, wind-tunnel measurement, crosswind simulation facility
Veranstaltungstitel:5th International Conference on Railway Technology: Research, Development and Maintenance
Veranstaltungsort:Montpellier, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:22 August 2022
Veranstaltungsende:25 August 2022
Veranstalter :Civil-Comp Conferences
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: Buhr, Alexander
Hinterlegt am:07 Dez 2022 14:03
Letzte Änderung:24 Apr 2024 20:42

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.