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Modeling of Diesel Combustion and NO Emissions Based on a Modified Eddy Dissipation Concept
Technical Paper
2004-01-0107
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper reports the development of a model of diesel combustion and NO emissions, based on a modified eddy dissipation concept (EDC), and its implementation into the KIVA-3V multidimensional simulation. The EDC model allows for more realistic representation of the thin sub-grid scale reaction zone as well as the small-scale molecular mixing processes. Realistic chemical kinetic mechanisms for n-heptane combustion and NOx formation processes are fully incorporated. A model based on the normalized fuel mass fraction is implemented to transition between ignition and combustion. The modeling approach has been validated by comparison with experimental data for a range of operating conditions. Predicted cylinder pressure and heat release rates agree well with measurements. The predictions for NO concentration show a consistent trend with experiments. Overall, the results demonstrate the improved capability of the model for predictions of the combustion process.
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Citation
Hong, S., Assanis, D., Wooldridge, M., Im, H. et al., "Modeling of Diesel Combustion and NO Emissions Based on a Modified Eddy Dissipation Concept," SAE Technical Paper 2004-01-0107, 2004, https://doi.org/10.4271/2004-01-0107.Also In
Modelling: Diesel Engines, Multi-Dimensional Engine, and Vehicle and Engine Systems
Number: SP-1826; Published: 2004-03-08
Number: SP-1826; Published: 2004-03-08
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