The effects of composition on the burning velocity and nitric oxide formation in laminar premixed flames of CH4 + H2 + O2 + N2

F.H.V. Coppens, J. Ruyck, de, A.A. Konnov

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

    120 Citaten (Scopus)

    Samenvatting

    Experimental measurements of adiabatic burning velocity and NO formation in (CH4 + H2) + (O2 + N2) flames are presented. The hydrogen content in the fuel was varied from 0 to 35% and the oxygen content in the air from 20.9 to 16%. Nonstretched flames were stabilized on a perforated plate burner at 1 atm. The heat flux method was used to determine burning velocities under conditions when the net heat loss of the flame is zero. Adiabatic burning velocities of methane + hydrogen + nitrogen + oxygen mixtures were found in satisfactory agreement with the modeling. The NO concentrations in these flames were measured in the burnt gases at a fixed distance from the burner using probe sampling. In lean flames, enrichment by hydrogen has little effect on [NO], while in rich flames, the concentration of nitric oxide decreases significantly. Dilution by nitrogen decreases [NO] at any equivalence ratio. Numerical predictions and trends were found in good agreement with the experiments. Different responses of stretched and nonstretched flames to enrichment by hydrogen are demonstrated and discussed.
    Originele taal-2Engels
    Pagina's (van-tot)409-417
    TijdschriftCombustion and Flame
    Volume149
    Nummer van het tijdschrift4
    DOI's
    StatusGepubliceerd - 2007

    Vingerafdruk

    Duik in de onderzoeksthema's van 'The effects of composition on the burning velocity and nitric oxide formation in laminar premixed flames of CH4 + H2 + O2 + N2'. Samen vormen ze een unieke vingerafdruk.

    Citeer dit