Aerodynamic Drag Reduction of Railroad Tank Wagons

dc.contributor.authorNayeri, Christian Navid
dc.contributor.authorTschepe, Jonathan
dc.contributor.authorSchulze, Harald
dc.contributor.authorSchell, Hanno
dc.date.accessioned2022-09-19T12:06:05Z
dc.date.available2022-09-19T12:06:05Z
dc.date.issued2022-08-19
dc.date.updated2022-09-07T16:44:29Z
dc.description.abstractSeveral geometrical modifications for passive flow control applied to a railroad tank wagon were investigated for the purpose of assessing the potential for the aerodynamic optimization of freight trains. The modifications were designed in accordance with applicable requirements and regulations. Four different modifications were investigated in the wind tunnel of the TU Berlin with 1:25 scaled wagon models: face radius, side skirts, fairing of the roof platform, and the newly introduced inter-wagon discs. In order to simulate the positions of the tested wagon at the end of a long train, the boundary layer on the train model setup was artificially thickened by spires. The Reynolds number was in the range of 0.4 × 106. The results of the experiments show that the proposed measures can reduce the aerodynamic drag of the individual wagon by up to 29%, depending on the location in the train consist. It was also shown that by combining different measures, the individual drag reductions add up. The device with the highest drag reduction was found to be the inter-wagon disc. Three different diameters of the inter-wagon disc were investigated. The largest diameter performed best and was less sensitive to the moving direction of the wagon in comparison to the smaller diameters.en
dc.identifier.eissn2311-5521
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/17501
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-16282
dc.language.isoenen
dc.rightsLicensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc530 Physikde
dc.subject.otheraerodynamicsen
dc.subject.otherflow controlen
dc.subject.othertrainen
dc.subject.otheraerodynamic dragen
dc.subject.othertank wagonen
dc.subject.otherfreight trainen
dc.subject.otherbluff bodyen
dc.subject.otherwind tunnelen
dc.titleAerodynamic Drag Reduction of Railroad Tank Wagonsen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber283en
dcterms.bibliographicCitation.doi10.3390/fluids7080283en
dcterms.bibliographicCitation.issue8en
dcterms.bibliographicCitation.journaltitleFluidsen
dcterms.bibliographicCitation.originalpublishernameMDPIen
dcterms.bibliographicCitation.originalpublisherplaceBaselen
dcterms.bibliographicCitation.volume7en
tub.accessrights.dnbfreeen
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme>Inst. Strömungsmechanik und Technische Akustik (ISTA)>FG Experimentelle Strömungsmechanikde
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Experimentelle Strömungsmechanikde
tub.affiliation.instituteInst. Strömungsmechanik und Technische Akustik (ISTA)de
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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