AN EXPERIMENTAL AND NUMERICAL STUDY OF N-DODECANE/BUTANOL BLENDS FOR COMPRESSION IGNITION ENGINES
Alcohols are potential blending agents for use in compression ignition engines. This work experimentally and numerically investigates the use of n-butanol as a blending component for diesel fuel. Dodecane was selected as a surrogate for diesel fuel and various concentrations of n-butanol were added to study ignition characteristics. A skeletal mechanism for n-dodecane and n-butanol blends with 203 species was developed for numerical simulations. The mechanism was developed by combining a 106 species n-dodecane skeletal mechanism and a detailed mechanism for all the butanol isomers. The mixture mechanism was validated for various pressure, temperature and equivalence ratio using a homogeneous reactor model form CHEMKIN pro solver for neat base fuels (n-dodecane and butanol). A computational fluid dynamics (CFD) platform was used for validation of n-dodecane/butanol blends (5, 10 and 20% by vol.) by using the commercially CFD solver CONVERGE.