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Experimental and Modeling Study on Auto-Ignition of Methane/Hydrogen Blends at Elevated Pressures
Technical Paper
2014-01-1335
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Both experimental and simulated ignition delay times were obtained behind reflected shock waves for the diluted stoichiometric methane/hydrogen blends with hydrogen fractions of 20%, 60%, and 80%. Test temperatures are from 1000 K to 1820 K and pressures are from 0.5 to 2.0 MPa. Results showed that increase in hydrogen fraction can promotes significantly the ignition of methane due to higher activity of hydrogen. Pressure-dependence of auto-ignition was observed in three ignition regimes (methane chemistry dominating ignition, combined chemistry of methane and hydrogen dominating ignition and hydrogen chemistry dominating ignition). Kinetic model, NUIG Mech C5_49, was used and validated against current ignition data. It was found that NUIG Mech C5_49 can give a good prediction for all test mixtures. A fuel flux analysis was performed to explain the chemical interaction between methane and hydrogen.
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Zhang, Y., "Experimental and Modeling Study on Auto-Ignition of Methane/Hydrogen Blends at Elevated Pressures," SAE Technical Paper 2014-01-1335, 2014, https://doi.org/10.4271/2014-01-1335.Also In
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