Nitric oxide detection in turbulent premixed methane/air flames
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Autor:innen
Autor:in (Körperschaft)
Publikationsdatum
01.2005
Typ der Arbeit
Studiengang
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
Proceedings of the Combustion Institute
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
30
Ausgabe / Nummer
1
Seiten / Dauer
1517-1525
Patentnummer
Verlag / Herausgebende Institution
Elsevier
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
Investigations of the nitric oxide formation mechanisms of turbulent premixed methane/air flames, with regard to turbulence properties and equivalence ratio, are presented. An atmospheric burner with perforated turbulence generating grids allowed the realization of different turbulent flow conditions (Re = 8.5 × 103–1.7 × 104, u′/sL = 0.8–8.0), which were measured by PIV. Planar LIF was used to detect the OH radical (as a tracer for the flame front) and to visualize the distribution of NO in a two-dimensional area for the whole flame up to far downstream positions. A chemiluminescence detection (CLD) of the NO concentration in the post-flame gases was employed to quantify the NO-LIF measurements. The influence of the equivalence ratio on the spatial distribution of NO was similar to numerical predictions for laminar flames, while variations of turbulence conditions played a rather minor role. The statistical evaluation of local flame front locations enabled the determination of their fluctuation region and its probability distribution. Comparing ensemble-averaged and distribution width of the flame location along the burner axis with the spatial distribution of NO assisted in the understanding of the relative contributions of prompt- and thermal-NO formation paths for different values of the equivalence ratio and turbulence intensity in turbulent premixed flames. Furthermore, qualitative single shot NO-LIF measurements showed structural features, resembling those of the instantaneous turbulent flame front.
Schlagwörter
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
1540-7489
1873-2704
1873-2704
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Nein
Zukunftsfelder FHNW
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Closed
Lizenz
Zitation
Herrmann, K., & Boulouchos, K. (2005). Nitric oxide detection in turbulent premixed methane/air flames. Proceedings of the Combustion Institute, 30(1), 1517–1525. https://doi.org/10.1016/j.proci.2004.08.100