Comparative Study on Chemical Kinetics Mechanisms for Methane-Based Fuel Mixtures under Engine-Relevant Conditions
Abstract
:1. Introduction
2. Kinetic Modeling Approach
3. Results and Discussion
3.1. Methane
Mixture | p (atm) | T (K) | Reference | |
---|---|---|---|---|
Ignition delay time | ||||
100%CH4 | 0.5 | ~20 | 1250–1650 | [39] |
100%CH4 | 0.5/1.0 | ~10 to 40 | 1400–2000 | [38] |
100%CH4 | 0.4 | ~50 | 1200–1350 | [37] |
50%CH430%H220%CO | 0.5 | ~50 | 950–1100 | [40] |
90%CH410%C3H8 | 0.5 | ~10 to 30 | 1200–1500 | [41] |
Laminar flame speed | ||||
100%CH4 | 0.6–1.4 | ~2 to 60 | 298 | [42] |
40%CH4 30%H230%CO | 0.8–1.6 | ~1 | 295 | [43] |
3.2. Methane/Syngas Mixtures
3.3. Methane/Propane Mixtures
3.4. Effect of Pressure and Equivalence Ratio on Methane/Syngas Ignition Delay Times and Laminar Flame Speeds
3.5. Ignition Delay Times and Laminar Flame Speeds of Methane/Syngas Mixtures with Reduced Mechanisms
3.6. Effect of Hydrogen Addition on Methane’s Ignition Delay Times and Laminar Flame Speeds
3.7. NOx and CO Emissions for Methane/Hydrogen and Methane/Syngas Cases
4. Conclusions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Properties | Unit | CH4 | C3H8 | H2 | CO |
---|---|---|---|---|---|
Molecular weight | (g/mol) | 16.04 | 44.1 | 15.0 | 28.01 |
Density at 0 °C and 1 atm | (kg/m3) | 0.72 | 1.88 | 0.09 | 1.25 |
Specific gravity at 0 °C and 1 atm | - | 0.55 | 1.52 | 0.06 | 0.96 |
Stoichiometric air–fuel ratio | mass basis | 17.2 | 15.5 | 34.1 | 0.57 |
Wobbe number | (MJ/Nm3) | 45 | 67.8 | 44.2 | 12.4 |
Flammability limit, % volume of fuel in air | volume of air | 5–15 | 2.1–9.5 | 4–75 | 12–75 |
Laminar flame speed at 1 atm and 300 K, Φ = 1 | (cm/s) | 30 | 38 | 180 | 35 |
Adiabatic flame temperature | (°C) | 1963 | 1980 | 2210 | 2121 |
Auto-ignition temperature | (°C) | 585 | 455 | 560 | 610 |
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Paykani, A. Comparative Study on Chemical Kinetics Mechanisms for Methane-Based Fuel Mixtures under Engine-Relevant Conditions. Energies 2021, 14, 2834. https://doi.org/10.3390/en14102834
Paykani A. Comparative Study on Chemical Kinetics Mechanisms for Methane-Based Fuel Mixtures under Engine-Relevant Conditions. Energies. 2021; 14(10):2834. https://doi.org/10.3390/en14102834
Chicago/Turabian StylePaykani, Amin. 2021. "Comparative Study on Chemical Kinetics Mechanisms for Methane-Based Fuel Mixtures under Engine-Relevant Conditions" Energies 14, no. 10: 2834. https://doi.org/10.3390/en14102834