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Fig. 3 a Measured and predicted laminar flame speeds for various H
2
/CO spherically expanding
premixed flames. b Measured and predicted laminar flame speeds versus pressure at
ϕ
= 2.5 for
argon-diluted syngas mixture with CO and H
2
mol fractions of 0.265 and 0.029, respectively
respectively. Figure
3
a from Bouvet et al. (
2011
) shows the effect of syngas
composition on the burning velocity. As expected, with the increase in H
2
fraction,
the
fl
flame speed increases,
fl
flammability limits become wider, and the peak in
fl
ame
speed occurs progressively at higher equivalence ratios,
. These effects can be
attributed to the higher diffusivity and reactivity of H
2
. Figure
3
b from Quattrocchi
(
2014
) presents the effect of pressure on the burning velocity. Results are shown for
argon-diluted syngas mixture with CO and H
2
mol fractions of 0.265 and 0.029,
respectively, at
ϕ
= 2.5. Measurements are from Burke et al. (
2010
), and predictions
are performed with the CHEMKIN software using the San Diego (
2002
), Davis
(Davis et al.
2005
), USCII (Wang et al.
2007
), and Curran (K
ϕ
é
romn
è
s et al.
2013
)
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