MECHANICAL ENGINEERING SEMINAR SERIES 2007MS Thesis PresentationTuesday, February 19, 2008 9:00 – 11:00 am2555 (D) Engineering Building (ME Conference Room)“Numerical Simulation of a Direct Injection Spark Ignition EngineUsing Ethanol as Fuel” ByShalabh SrivastavaAdvisor: Dr. Farhad Jaberi Numerical simulations have been performed to compare the vaporization and combustion of gasoline and ethanol in a direct injection spark ignition engine. The widely used, open source, computational fluid dynamics KIVA - 3V code has been used for this purpose. A multidimensional look up table of ignition delays has been formulated from a detailed mechanism for ethanol oxidation using CHEMKINTM and has been used to modify the ignition delays predicted by the global one step mechanism used to simulate combustion. The “cold start” phenomenon in ethanol operated engines has been observed in the simulations and various strategies to enhance ethanol vaporization and combustion have been tested. Simulation results indicate that some of the strategies used for emission control and downsizing of gasoline engines may be employed for “improving” combustion in ethanol operated engines. Persons with disabilities please contact Aida Montalvo montalai@egr.msu.edu to request accommodations.