TY - SER AU - Rakopoulos, C.D. AU - Michos, C.N. TI - Quasi-Dimensional, Multi-Zone Combustion Modelilng of Turbulent Entrainment and Flame Stretch for a Spark Ignition Engine Fuelied with Hydrogen-Enriched Biogas KW - Biogas KW - Characteristic Speeds KW - Combustion Models ER -