Development of a FPI Detailed Chemistry Tabulation Methodology for Internal Combustion Engines
Abstract
In this paper, the FPI (Flame Prolongation
of ILDM) approach for chemistry tabulation is applied to 3D internal
combustion engine simulations. The first issue is to adapt the method to a
fully compressible solver with a limited database size. Tabulation reduction
could be a solution for reducing the database size but, for the present
applications, the compositions together with local thermodynamic conditions
are varying over very large ranges. Instead, we propose a novel formulation
of the model based on the mass fraction balance equation of main species
and on the tabulated chemical source term of the reaction progress variable.
Then, the model is extended to engine problematics such as dilutant addition
and complex fuels handling. The model is integrated in the IFP-C3D internal
combustion engine solver and it is validated against complex chemistry
calculations in constant and variable volume configurations. The model is
finally successfully applied to the computation of Diesel engine operating
point with spray injection.
Domains
Physics [physics]
Origin : Publication funded by an institution
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