Development and assessment of volume resolving velocimetry for turbomachinery test facilities

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dc.contributor.corporatenameKassel, Universität Kassel, Fachbereich Elektrotechnik / Informatik
dc.contributor.refereeHillmer, Hartmut (Prof. Dr.)
dc.contributor.refereeLawerenz, Martin (Univ.-Prof. Dr.-Ing.)
dc.contributor.refereeWitzigmann, Bernd (Prof. Dr.)
dc.contributor.refereeLehmann, Peter (Prof. Dr.-Ing.)
dc.date.accessioned2018-01-09T11:14:35Z
dc.date.available2018-01-09T11:14:35Z
dc.date.examination2017-10-16
dc.date.issued2017-12-21
dc.description.sponsorshipPart of the work presented is supported by the EU-project AFDAR (Advanced Flow Diagnostics for Aeronautical Research, project no. 265695) of the 7th Framework programme whose support is gratefully acknowledged.eng
dc.identifier.issn1434-8454
dc.identifier.uriurn:nbn:de:hebis:34-2018010954161
dc.identifier.urihttp://hdl.handle.net/123456789/2018010954161
dc.language.isoeng
dc.publisherDeutsches Zentrum für Luft- und Raumfahrt DLRger
dc.rightsUrheberrechtlich geschützt
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/
dc.subjecttransonic floweng
dc.subjecttomographic reconstructioneng
dc.subjectPIVeng
dc.subjectpulsed LEDeng
dc.subjectshadowgraphyeng
dc.subjectsprayseng
dc.subjectairblast atomizationeng
dc.subjectswirled flowger
dc.subject.ddc620
dc.subject.pacs47.80.Cbger
dc.subject.pacs47.80.Jkger
dc.subject.pacs4755.Cager
dc.subject.pacs47.40.Hgger
dc.subject.pacs42.30.Wbger
dc.subject.swdTranssonische Strömungger
dc.subject.swdTomografieger
dc.subject.swdParticle-Image-Velocimetryger
dc.subject.swdLumineszenzdiodeger
dc.titleDevelopment and assessment of volume resolving velocimetry for turbomachinery test facilitieseng
dc.typeDissertation
dcterms.abstractThe present thesis assesses the applicability of volume resolving velocimetry for turbo machinery test facilities. Tomographic particle image velocimetry has been implemented in a transonic cascade wind tunnel. Assessment is based on 3D-3C measurements of the passage vortex in an axial compressor cascade at subsonic inflow (Ma1=0.6). Results show broad consistency with stereoscopic PIV with improved depth resolution. A novel Fast Multiplicative Algebraic Reconstruction Technique (FMART) enables signi cantly faster computations of particle reconstructions in comparison to a state-of-the-art procedure (simultaneous MART) while maintaining similar accuracies. The second part describes the development of tomographic shadowgraphy for 3-D measurements of spatial fuel spray distributions and droplet velocities. This novel approach is based on simultaneous imaging from different directions with pulsed LED inline illumination. Assessment is based on 3D-3C measurements of the airblast atomization of a single kerosene jet in a swirl flow at air pressures between 4-7 bar and air temperatures between 440-570 K inside a spray test facility. The minimum resolvable droplet diameter is 10 µm under the given experimental conditions. Validation against PDA data revealed consistency at size classes d = 10µm and 15µm.eng
dcterms.accessRightsopen access
dcterms.bibliographicCitationForschungsbericht / Deutsches Zentrum für Luft- und Raumfahrt DLR FB
dcterms.creatorKlinner, Joachim
dcterms.isPartOfDLR Forschungsbericht ;; 2017-52ger
dcterms.source.seriesDLR Forschungsberichtger
dcterms.source.volume2017-52ger

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