Experimental and Numerical Investigation of Ignition of Ammonia–Hydrocarbon Mixtures in Shock Tube Conditions

Key Points

• The primary aim is to measure ignition delay times of ammonia with hydrocarbon additives and compare these to numerical simulations.
• Conducted experimental measurements of ignition delay times in shock tube conditions.
• Used CH4, C2H2, C2H4, and C2H6 as additives with ammonia.
• Performed numerical simulations using modern kinetic models to predict ignition behavior.
• Analyzed the sensitivity of ignition delay times to reaction rate constants.
• Identified significant discrepancies between experimental data and numerical predictions.
• Highlighted the importance of HO2 and NH2 radicals in ignition processes.
• Pointed out key reactions involving N2Hx compounds impacting ignition behavior.