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Validation of Diesel Combustion Models with Turbulence Chemistry Interaction and Detailed Kinetics
Technical Paper
2019-24-0088
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Detailed and fast combustion models are necessary to support design of Diesel engines with low emission and fuel consumption. Over the years, the importance of turbulence chemistry interaction to correctly describe the diffusion flame structure was demonstrated by a detailed assessment with optical data from constant-volume vessel experiments. The main objective of this work is to carry out an extensive validation of two different combustion models which are suitable for the simulation of Diesel engine combustion. The first one is the Representative Interactive Flamelet model (RIF) employing direct chemistry integration. A single flamelet formulation is generally used to reduce the computational time but this aspect limits the capability to reproduce the flame stabilization process. To overcome such limitation, a second model called tabulated flamelet progress variable (TFPV) is tested in this work. Simulations in a heavy-duty engine are carried out for a large number of operating points and a detailed comparison between computed and experimental data is performed in terms of cylinder pressure, heat release rate and pollutant emissions.
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Zhou, Q., Lucchini, T., D'Errico, G., and Hardy, G., "Validation of Diesel Combustion Models with Turbulence Chemistry Interaction and Detailed Kinetics," SAE Technical Paper 2019-24-0088, 2019, https://doi.org/10.4271/2019-24-0088.Data Sets - Support Documents
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