Browse Publications Technical Papers 2007-01-1907
2007-07-23

3D-CFD Modeling of Conventional and Alternative Diesel Combustion and Pollutant Formation - A Validation Study 2007-01-1907

An improved version of the ECFM-3Z combustion model coupled with advanced models for NO and soot formation has been implemented in the CFD code FIRE and validated with respect to its applicability to conventional and alternative Diesel combustion. For this purpose the set of models was applied to the calculation of combustion and pollutant formation in a high-speed DI Diesel engine for selected operating points adopting a large number of DoE based combustion system parameter variations. Assessment of the models' performance was enabled via comparison of the calculation results with the corresponding experimental data. Good agreement of calculated and measured in-cylinder pressure traces as well as pollutant formation trends could be observed for both the conventional and alternative Diesel combustion modes for the investigated parameter variations.

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