Abbas Zarenezhad Ashkezari - Associate Professor of Mechanical Engineering, Imam Khomeini Marine Sciences University, Nowshahr, Iran
Reza Zirak - MSc of Mechanical Engineering, Islamic Azad University of Sari and Research and Self-Sufficiency Jihad ofthe IR Navy, Tehran Iran Nowshahr

In this paper, different regimes of biodiesel spray’s wall impingement have been studied on performanceand emissions of diesel engines, and the optimum spray’s wall impingement model was specified. Theresults show that WALLJET model considered all aspects of wall impingement and predicts the fueldroplet size produced by penetration and decomposition, correctly. Therefore can be used to simulate theatomization of biodiesel fuel spray at different engine operating conditions by adjusting the modelconstants.

Wall impingement, Spray, Exhaust, Biodiesel, Combustion