CFD Simulation of the Biodiesel and Diesel Blends Combustion Process in an In-Direct Injection Diesel Engine

In this study, the combustion process and emission formation using a blend of biodiesel and diesel fule in the in-direct-injection diesel engine) Lister 8.1(at full load states have been simulated with a computational fluid dynamics (CFD). The utilized model was included detailed spray atomization, mixture formation and distribution model which are enable to modeling the combustion process in spray/wall and spray/swirl interactions along flow configurations. Simulation of combustion and expansion stroke was done, therefore qualitative analysis was presented. The results revealed that increasing the percentage of biodiesel in the fuel caused to increase indicated power, indicated specific fuel consumption and peak cylinder temperature. Also results showed that UHC and soot emissions decreased but NOx emission was increased. The results of this research in compare with the corresponding results in the literature and showed a good agreement.