Diesel Combustion Model with Auto-ignition Process of Non-homogeneous Mixture
Date Published: 2009-06-15
Paper Number:2009-01-1897
DOI: 10.4271/2009-01-1897
Citation:
Kawanabe, H., Yamamoto, R., and Ishiyama, T., "Diesel Combustion Model with Auto-ignition Process of Non-homogeneous Mixture," SAE Technical Paper 2009-01-1897, 2009, doi:10.4271/2009-01-1897.
Diesel combustion model for CFD simulation is established taking account of an auto-ignition process of non-homogeneous mixture. Authors revealed in their previous paper that the non-homogeneity of fuel-air mixture affected more on auto-ignition process such as its ignition delay or combustion duration than the turbulent mixing rate. Based on these results, novel diesel combustion model is proposed in this study. The transport calculation for local variation of fuel-air PDF is introduced and the chemical reaction rate is provided by the local non-homogeneity. Furthermore, this model is applied the RANS based CFD simulation of the spray combustion in a Diesel engine condition. The results show that the combustion process is well described for several engine operations.
Purchase more technical papers and save! With TechSelect,
you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
Learn more >
