Free Stream Behavior of Hydrogen Released from a Fluidic Oscillating Nozzle

dc.contributor.authorFink, Anja
dc.contributor.authorNett, Oliver
dc.contributor.authorSchmidt, Simon
dc.contributor.authorKrüger, Oliver
dc.contributor.authorEbert, Thomas
dc.contributor.authorTrottner, Alexander
dc.contributor.authorJander, Bojan
dc.date.accessioned2021-08-17T06:41:56Z
dc.date.available2021-08-17T06:41:56Z
dc.date.issued2021-07-05
dc.date.updated2021-08-01T12:20:06Z
dc.description.abstractThe H2 internal combustion engine (ICE) is a key technology for complete decarbonization of the transport sector. To match or exceed the power density of conventional combustion engines, H2 direct injection (DI) is essential. Therefore, new injector concepts that meet the requirements of a H2 operation have to be developed. The macroscopic free stream behavior of H2 released from an innovative fluidic oscillating nozzle is investigated and compared with that of a conventional multi-hole nozzle. This work consists of H2 flow measurements and injection tests in a constant volume chamber using the Schlieren method and is accompanied by a LES simulation. The results show that an oscillating H2 free stream has a higher penetration velocity than the individual jets of a multi-hole nozzle. This behavior can be used to inject H2 far into the combustion chamber in the vertical direction while the piston is still near bottom dead center. As soon as the oscillation of the H2 free stream starts, the spray angle increases and therefore H2 is also distributed in the horizontal direction. In this phase of the injection process, spray angles comparable to those of a multi-hole nozzle are achieved. This behavior has a positive effect on H2 homogenization, which is desirable for the combustion process.en
dc.identifier.eissn2311-5521
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/13503
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-12286
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc600 Technik, Technologiede
dc.subject.otherhydrogen internal combustion engineen
dc.subject.otherhydrogen injectionen
dc.subject.otherSchlierenen
dc.subject.otherlarge eddy simulationen
dc.subject.otheroscillating nozzleen
dc.subject.otherfluidic oscillatorsen
dc.titleFree Stream Behavior of Hydrogen Released from a Fluidic Oscillating Nozzleen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber245en
dcterms.bibliographicCitation.doi10.3390/fluids6070245en
dcterms.bibliographicCitation.issue7en
dcterms.bibliographicCitation.journaltitleFluidsen
dcterms.bibliographicCitation.originalpublishernameMDPIen
dcterms.bibliographicCitation.originalpublisherplaceBaselen
dcterms.bibliographicCitation.volume6en
tub.accessrights.dnbfreeen
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme>Inst. Land- und Seeverkehr (ILS)>FG Fahrzeugantriebede
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Fahrzeugantriebede
tub.affiliation.instituteInst. Land- und Seeverkehr (ILS)de
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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