Investigate auto-ignition of stoichiometric methane-air mixture
Bagher Abareshi (University of Tehran), Hassan Mohagheghi (University, of Tehran), Morteza Khosronia Kalalabadi (University of Tehran)
TL;DR
This study investigates how initial temperature influences the auto-ignition of stoichiometric methane-air mixtures using detailed chemical kinetics, revealing that lower initial temperatures prevent ignition.
Contribution
It provides a detailed analysis of auto-ignition mechanisms using chemical kinetics and sensitivity analysis, highlighting the temperature dependence of ignition.
Findings
Auto-ignition is directly related to initial temperature.
Lower initial temperatures can prevent auto-ignition.
Arrhenius reaction rates were calculated for the process.
Abstract
Auto-ignition process of stoichiometric mixture of methane-air is investigated using detailed chemical kinetics in a single-zone combustion chamber. Effect of initial temperature on start of combustion (SOC). The Arrhenius expression for the specific reaction rate are calculated and auto-ignition was evaluated based on the species fractions and sensitivity analysis. Our results suggest that the SOC is directly related to initial temperature and the auto-ignition will not occur if the initial temperature low enough.
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Taxonomy
TopicsAdvanced Combustion Engine Technologies · Combustion and flame dynamics · Combustion and Detonation Processes