Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
REDUCED KINETICS MODELS FOR GASOLINE SURROGATES
Submission Author:
Kathleen Mayara Balestrin , SC
Co-Authors:
Kathleen Mayara Balestrin, Moisés Sousa, Vinicius Rugeri Borges Bonini, Jônatas Vicente, Leonel R Cancino
Presenter: Kathleen Mayara Balestrin
doi://10.26678/ABCM.COBEM2021.COB2021-1251
Abstract
Due to environmental concerns, research has been carried out to increase the fuel’s performance in internal combustion engines. Detailed kinetics models are composed of hundreds or thousands of chemical species with an extended sequence of chemical reactions, making the simulation process intractable with the employment of computational reactive fluid dynamics (CRFD). Methods to detailed kinetic mechanisms reduction are employed purposely to obtain more complete mechanisms than the global ones, with the capability to supply the required information with lower differences concerning the detailed, and mainly, reducing the computational cost. The main objective of this study is the development of reduced mechanisms by the systematic elimination of the low-ranked reaction-rate elementary reactions method. Three detailed chemical kinetics models were used as base-model and then reduced considering the numerical response of ignition delay time and laminar flame speed for fuel surrogates. Methane and binary Primary Reference Fuels mixtures were chosen as fuels for detailed kinetics mechanisms reduction. The results of IDT and LFS predictions showed accuracy comparing with those with detailed models. Moreover, the main observation was that the employment of the reduced mechanisms results in a higher variation in LFS than in the IDT prediction.
Keywords
Reduced kinetics models, Sensitivity analysis, Fuel surrogates
