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1 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Schematic representation of the experimental setup

2 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Combustion pressure traces at an equivalence ratio of 1 and different oxygen ratios (reader is referred to the online version of this article for color info)

3 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Measured LBV at an equivalence ratio of 1 as a function of oxygen ratio

4 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: The adiabatic flame temperature versus equivalence ratio at different O2 ratios. Also shown is results in air (reader is referred to the online version of this article for color info).

5 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Combustion pressure traces at D = 35% and different equivalence ratios (reader is referred to the online version of this article for color info)

6 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Measured LBV versus equivalence ratio at different O2 ratios. Predictions of GRI-Mech 3.0 [29] and ARAMCO Mech 1.3 [36] are also shown to be in good agreement with the current data.

7 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Current LBV data for mixture with D = 35% at different equivalence ratios with those of Xie et al. [5], Hu et al. [4], and Konnov and Dyakov [6]

8 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Current LBV data for mixture with D = 32% at different equivalence ratios with those of Konnov and Dyakov [6]

9 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Flame propagation for CH4, O2, and CO2 at an equivalence ratio of 1 and D = 26%. Laser is incident from top. Window diameter is 1.85 in. Note that LBV data are neglected in this case due to nonspherical flame.

10 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Flame propagation for CH4, O2, and CO2 and D = 38%, at an equivalence ratio of 0.9 ((a) and (b)), and 1.1 ((c) and (d)). Laser is incident from top. Window diameter is 1.85 in.

11 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: CO2 sensitivity for D = 38%, T = 1140 K

12 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: CO2 sensitivity for D = 35%, T = 1140 K

13 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: CO2 sensitivity for D = 32%, T = 1140 K

14 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: OH, O, and H radicals mole fraction at different CO2 fraction of CH4/CO2/O2 mixture, Φ = 1: solid lines—D = 38% and dashed lines—D = 32% (reader is referred to the online version of this article for color info)

15 Date of download: 10/27/2017 Copyright © ASME. All rights reserved. Laser Ignition and Flame Speed Measurements in Oxy-Methane Mixtures Diluted With CO2 J. Energy Resour. Technol. 2015;138(3): doi: / Figure Legend: Comparison of current data with GRI-Mech 3.0 [29] predictions (modified and unmodified mechanisms, see text for details)


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