Effects of temperature and composition on the laminar burning velocity of CH4+ H2+ O2+ N2 flames

Ignition delay times, laminar flame speeds, and mechanism validation for natural gas/hydrogen blends at elevated pressures

“…However, Fig. 18 shows the large uncertainty in 80% methane/20% hydrogen laminar flame speeds at 1 atm and 298 K reported in the literature [15,[62][63][64]. Aram- Comparisons of model predictions compared to experimental data taken by…”

“…Hermanns et al [62] using the heat flux method are provided in Fig. 4 of the Supplementary Material.…”

Measurements of Laminar Flame Velocity for Components of Natural Gas

“…While it is possible to find many results concerning the measurement of laminar flame velocities for diluted methane (in nitrogen, helium, argon...), only a few papers deal with the measurement of laminar flame velocities of methane mixtures enriched by hydrogen (23)(24)(25)(26)(27), which can be of significant importance as it leads to a significant increase in flame velocity. Figure 4a shows the variation of laminar flame velocities with equivalence ratios obtained for different hydrogen contents in the fuel mixture.…”

“…In Figure 4b, measured laminar burning velocities are presented as a function of the hydrogen content for an equivalence ratio of 1.1 and these results are compared to those of the literature (23)(24)(25)(26)(27). Our measurements are in good agreement with these data, at least with those which have been recently obtained (24)(25)(26)(27). The agreement is very good from 0 to 68% of H 2 with the results of the only study in which such a large H 2 content has been used (26).…”

“…The equation which is presented below is based on those of Hermanns et al (27) but was rearranged to be appropriate for our case and our conditions:…”