A laminar burning velocity correlation for combustion simulation of hydrogen-enriched ethanol engines

In this paper, a laminar burning velocity correlation was proposed for combustion simulation of hydrogen-enriched ethanol engines. This correlation was developed based on the flame-temperature-based mixing rule. Wide ranges of hydrogen mole fraction, equivalence ratio, unburned gas temperature, pressure, and residual gas mass fraction were simultaneously considered in the correlation to cover the burning conditions encountered in the spark-ignited (SI) engine combustion. Computational fluid dynamics (CFD) calculations were performed with the implementation of this correlation. This correlation was confirmed to be suitable for engine simulation since the CFD model could well capture the combustion behavior in hydrogen-enriched ethanol engines.