Acoustic modes in a plenum downstream of a multitube pulse detonation combustor

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dc.contributor.authorHabicht, Fabian
dc.contributor.authorYĆ¼cel, Fatma Cansu
dc.contributor.authorHaghdoost, Mohammad Rezay
dc.contributor.authorOberleithner, Kilian
dc.contributor.authorPaschereit, Christian Oliver
dc.date.accessioned2022-05-17T11:31:38Z
dc.date.available2022-05-17T11:31:38Z
dc.date.issued2021-08-31
dc.description.abstractThe operation of a multitube pulse detonation combustor (PDC) evokes undesirable pressure fluctuations for a turbine downstream of the combustor. Pressure measurements in a downstream annular plenum reveal distinct pressure fluctuations. Although pressure peaks due to the shock waves emanating from the PDC tubes have been investigated in previous studies, pressure oscillations throughout the remaining cycle duration have received far less attention. Based on azimuthal and frequency mode decomposition of pressure signals at six circumferential positions, these oscillations are found to result from acoustic modes that are excited by PDC operation. This conclusion is verified by comparison with numerically calculated eigenmodes of the plenum. The impact of different operating parameters and the plenum outlet geometry on the acoustic oscillations are determined. The sequential firing of the PDC tubes at the lowest firing frequency in combination with a small blockage ratio was identified as the favorable configuration for the smallest acoustic fluctuations.en
dc.description.sponsorshipDFG, 200291049, SFB 1029: TurbIn - Signifikante Wirkungsgradsteigerung durch gezielte, interagierende Verbrennungs- und StrƶmungsinstationaritƤten in Gasturbinenen
dc.identifier.eissn1533-385X
dc.identifier.issn0001-1452
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/16935
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-15714
dc.language.isoenen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete TƤtigkeitende
dc.subject.othercombustorsen
dc.subject.otherdeflagration to detonation transitionen
dc.subject.otherdetonation wavesen
dc.subject.otherpower spectral densityen
dc.subject.otherpressure sensorsen
dc.subject.othermass flow rateen
dc.subject.otherair mass flow ratesen
dc.subject.otherpulse detonation engineen
dc.subject.otherfuel consumptionen
dc.subject.otherstatic pressureen
dc.titleAcoustic modes in a plenum downstream of a multitube pulse detonation combustoren
dc.typeArticleen
dc.type.versionacceptedVersionen
dcterms.bibliographicCitation.doi10.2514/1.J060416en
dcterms.bibliographicCitation.issue11en
dcterms.bibliographicCitation.journaltitleAIAA Journalen
dcterms.bibliographicCitation.originalpublishernameAmerican Institute of Aeronautics and Astronauticsen
dcterms.bibliographicCitation.originalpublisherplaceReston, Va. [u.a.]en
dcterms.bibliographicCitation.pageend4580en
dcterms.bibliographicCitation.pagestart4569en
dcterms.bibliographicCitation.volume59en
tub.accessrights.dnbfreeen
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme::Inst. Strƶmungsmechanik und Technische Akustik (ISTA)::FG Experimentelle Strƶmungsmechanikde
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Experimentelle Strƶmungsmechanikde
tub.affiliation.instituteInst. Strƶmungsmechanik und Technische Akustik (ISTA)de
tub.publisher.universityorinstitutionTechnische UniversitƤt Berlinen

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