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

Tomographic Spray Shadowgraphy - A Feasibility Study

Klinner, Joachim und Willert, Christian (2011) Tomographic Spray Shadowgraphy - A Feasibility Study. Forum on recent developments in Volume Reconstruction techniques applied to 3D fluid and solid mechanics 2011, 29.11.-01.12.2011, Poitiers, Frankreich.

[img] PDF - Nur angemeldete Benutzer - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader

Offizielle URL: http://fvr2011.conference.univ-poitiers.fr/


This contribution introduces tomographic shadowgraphy, a volume resolving imaging technique which is capable of recovering the liquid phase of a spray both spatially and temporally. The method is based on a multiple view camera setup with inline illumination provided by current pulsed LEDs which results in droplet shadows being projected onto the sensor plane. Each camera records image pairs with short interframing times which allows the trajectories of the individual droplets to be estimated using conventional three-dimensional particle tracking approaches. The observed volume is calibrated with a traversed micro target. A comparison is made between several photogrammetric and polynomial least square camera calibration techniques regarding their accuracy in deep volume calibration at magnifications close to unity. A calibration method based on volume calibration from multiple planar homographies at equally spaced z-planes was found to produce the most reliable calibration. Sequential combination of back-projected images at each voxel plane efficiently reproduces the droplet positions in three-dimensional space. The quality of spray reconstruction is investigated using experimental data from multiple view shadowgraphs of a hollow cone spray.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Tomographic Spray Shadowgraphy - A Feasibility Study
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Klinner, Joachimjoachim.klinner@dlr.deNICHT SPEZIFIZIERT
Willert, Christianchris.willert@dlr.deNICHT SPEZIFIZIERT
Datum:30 November 2011
Referierte Publikation:Ja
In Open Access:Nein
In ISI Web of Science:Nein
Stichwörter:tomographic reconstruction, pulsed LED, shadowgraphy, multiple views, spray diagnostics, airblast atomization, 3-D particle tracking velocimetry, PTV
Veranstaltungstitel:Forum on recent developments in Volume Reconstruction techniques applied to 3D fluid and solid mechanics 2011
Veranstaltungsort:Poitiers, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstalter :University of Poitiers
HGF - Forschungsbereich:Energie
HGF - Programm:Rationelle Energieumwandlung (alt)
HGF - Programmthema:E VG - Verbrennungs- und Gasturbinentechnik (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E VG - Verbrennungs- und Gasturbinentechnik
DLR - Teilgebiet (Projekt, Vorhaben):E - Gasturbine (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Antriebstechnik > Triebwerksmesstechnik
Hinterlegt von: Klinner, Joachim
Hinterlegt am:19 Jan 2012 11:04
Letzte Änderung:12 Dez 2013 21:32

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Hilfe & Kontakt
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2017 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.