# SIMULATIONS OF NON-PREMIXED LAMINAR COMBUSTION CONSIDERING DIFFERENT CHEMICAL MECHANISMS

## Palavras-chave:

Chemical Mechanism, Numerical Simulation, Methane Combustion## Resumo

Our understanding of combustion has developed greatly over the past century and the most

recent improvement is associated to modeling and simulation of combustion. To contribute to such

advancement this work presents a mathematical modeling of non-premixed gaseous combustion and

verifies the effects of chemical kinetic mechanisms over the velocity, temperature and chemical species

concentration fields. This paper presents simulations with two different reaction mechanisms: global

mechanism and skeletal mechanism. On the utilized mathematical model, the flow field is obtained by

the solution of the Navier-Stokes equations, the temperature field is obtained by the solution of the

energy conservation equations and the species concentration fields are obtained by the solution of the

conservation equations for individual chemical species. A computational code was written on MATLAB

for the simulations, considering bidimensional domain and axial symmetry. The simulation model is

validated by comparing with experimental data.