A new algorithm based on Computational Singular Perturbation (CSP) is
proposed to construct global reduced mechanism. The algorithm introduces
species concentrations, species net production rates and heat release rates
as integral weighting factors to integrate CSP-pointers, including radical
pointers and fast reaction pointers, throughout the computational domain. A
software package based on the algorithm was developed to make the reduction
process more efficient. Input to the algorithm includes (i) the detailed
mechanism, (ii) the numerical solution of the problem for a specific set of
operating conditions, (iii) the number of quasi steady state (QSS) species.
The proposed algorithm was applied to the reduction of GRI3.0 involving 53
species and 325 reactions leading to the development of a 15-species reduced
mechanism with 10 lumped steps. Then the reduced mechanism was validated in a
one-dimensional, unstretched, premixed, laminar steady flame over a wide
range of equivalence ratio, and excellent agreements between results
calculated with the detailed and the reduced mechanisms can be observed.
Development and Validation of a Reduced DME Mechanism Applicable to Various Combustion Modes in Internal Combustion Engines
