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2114618 
Journal Article 
Turbulent burning rates of methane and methane-hydrogen mixtures 
Fairweather, M; Ormsby, MP; Sheppard, CGW; Woolley, R 
2009 
Yes 
Combustion and Flame
ISSN: 0010-2180 
Elsevier 
156 
4 
780-790 
WOS:000264582400006 
Methane and methane–hydrogen (10%, 20% and 50% hydrogen by volume) mixtures have been ignited in a fan stirred bomb in turbulence and filmed using high speed cine schlieren imaging. Measurements were performed at 0.1 MPa (absolute) and 360 K. A turbulent burning velocity was determined for a range of turbulence velocities and equivalence ratios. Experimental laminar burning velocities and Markstein numbers were also derived. For all fuels the turbulent burning velocity increased with turbulence velocity. The addition of hydrogen generally resulted in increased turbulent and laminar burning velocity and decreased Markstein number. Those flames that were less sensitive to stretch (lower Markstein number) burned faster under turbulent conditions, especially as the turbulence levels were increased, compared to stretch-sensitive (high Markstein number) flames. 
Turbulent premixed; Laminar premixed; Burning rates; Measurement; Methane; Methane-hydrogen