The ann approximation of the CH4 combustion model

• Autorzy: Kowalski J.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the research effect of the modeling of the CH4 combustion process in different conditions. Presented model was prepared with using the GriMech 3 chemical kinetic mechanism of methane combustion. Its mechanism developed by research unit from University of Berkley and verified by more than 140 science publications. Mechanism GriMech 3 consist of description of reactions between 52 assumed chemical species and thermodynamic data of these reactions and chemical species. The paper presents algorithm of calculations the summarize heat release from combustion process and changing of chemical species mole fractions. Calculations was prepared for different temperature from 1100K to 3600K, different pressure from 2MPa to 5MPa and different combusted mixture composition (changing the humidity of air from 4,5 to 30gH2O/kg of air and air-fuel excess ratio from 0.8 to 2.5). Obtained results of calculations show dependences between mentioned parameters and time of combustion process. Increase temperature and/or pressure of combustion accelerate the combustion process and same process stay sudden. Increasing the quantity of air in fuel mixture causes a significant drop of the maximum heat release but accelerates the combustion process. The changing of quantity of water in combusted mixture not give the significant effect in heat release but changes mole fractions of a few chemical species.

Słowa kluczowe

EN

combustion process; model; combustion engines; methane; kinetic calculation; GriMech 3

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2010
• Tom: Vol. 5, no 1
• Strony: 95--102
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Kowalski J.

• Gdynia Maritime University, Department of Engineering Sciences Morska Street 81-87, 81-225 Gdynia, Poland tel.[phone], fax: [phone],

Bibliografia

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