KIT | KIT-Bibliothek | Impressum | Datenschutz

Two-Dimensional Tomographic Simultaneous Multi-Species Visualization—Part I: Experimental Methodology and Application to Laminar and Turbulent Flames

Häber, Thomas ORCID iD icon 1; Bockhorn, Henning 2,3; Suntz, Rainer 1
1 Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruher Institut für Technologie (KIT)
2 Engler-Bunte-Institut (EBI), Karlsruher Institut für Technologie (KIT)
3 Institut für Kolbenmaschinen (IFKM), Karlsruher Institut für Technologie (KIT)


In recent years, the tomographic visualization of laminar and turbulent flames has received much attention due to the possibility of observing combustion processes on-line and with high temporal resolution. In most cases, either the spectrally non-resolved flame luminescence or the chemiluminescence of a single species is detected and used for the tomographic reconstruction. In this work, we present a novel 2D emission tomographic setup that allows for the simultaneous detection of multiple species (e.g., OH*, CH* and soot but not limited to these) using a single image intensified CCD camera. We demonstrate the simultaneous detection of OH* (310 nm), CH* (430 nm) and soot (750 nm) in laminar methane/air, as well as turbulent methane/air and ethylene/air diffusion flames. As expected, the reconstructed distributions of OH* and CH* in laminar and turbulent flames are highly correlated, which supports the feasibility of tomographic measurements on these kinds of flames and at timescales down to about 1 ms. In addition, the possibilities and limitations of the tomographic approach to distinguish between locally premixed, partially premixed and non-premixed conditions, based on evaluating the local intensity ratio of OH* and CH* is investigated. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000120523
Veröffentlicht am 24.06.2020
DOI: 10.3390/en13092335
Zitationen: 3
Web of Science
Zitationen: 2
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Institut für Technische Chemie und Polymerchemie (ITCP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1996-1073
KITopen-ID: 1000120523
Erschienen in Energies
Verlag MDPI
Band 13
Heft 9
Seiten Art. Nr.: 2335
Vorab online veröffentlicht am 07.05.2020
Schlagwörter optical emission tomography; combustion; chemiluminescence; tomographic, reconstruction algorithms, Tikhonov regularization, laminar diffusion flame, turbulent diffusion flame, local equivalence ratio
Nachgewiesen in Dimensions
Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page