NDLI: Combustion Simulation of Hydrogen-Fuelled Diesel Engines Using Detailed Chemical Kinetics

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Khairallah, H. A. Koylu, U. O.
Copyright Year	2013
Abstract	During the past decade, considerable effort has been made to introduce alternative energy sources for use in conventional diesel and gasoline engines. Many researchers have attempted to use hydrogen as a fuel in the diesel engine due to its ability to reduce pollutant emissions, such as carbon monoxide and unburned hydrocarbons. With the rapid increase in computational capabilities, 3D computational fluid dynamics CFD codes become essential tools for practical design, control and optimization of hydrogen engines. In the present study, detailed chemical kinetic reactions with twenty steps of hydrogen oxidation with additional nitrogen oxidation reactions were coupled with AVL FIRE® code to study combustion processes in a diesel engine using hydrogen as the fuel. Moreover, a spark ignition model built by C++ program was incorporated into the AVL FIRE® software to simulate the hydrogen ignition behavior. The model was validated by the experimental results and employed to examine important parameters that have significant effects on the engine performance. The simulation results show that the variations of peak in-cylinder pressure, heat release rate, gas cylinder temperature, ignition delay, combustion duration, and NO emissions reasonably agree with the experimental findings. The exhaust gas recirculation (EGR) was also employed at different levels in the engine model. It was found that both peak cylinder pressure and gas cylinder temperature decrease as EGR level increases due to dilution effect. The computations are consistent with the hypothesis that gas cylinder temperature decreases with increasing EGR level and that the decrease in gas cylinder temperature results in the reduction in NO emissions.
File Format	PDF
ISBN	9780791856284
DOI	10.1115/IMECE2013-65194
Volume Number	Volume 6A: Energy
Conference Proceedings	ASME 2013 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2013-11-15
Publisher Place	San Diego, California, USA
Access Restriction	Subscribed
Subject Keyword	Detailed chemical kinetics for hydrogen Avl fire® Spark ignition engine Hydrogen engine and exhaust gas recirculation (egr) Emissions Exhaust gas recirculation Diesel engines Simulation Hydrogen Chemical kinetics Combustion Engines
Content Type	Text
Resource Type	Article

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