SIMULATIONS OF NON-PREMIXED LAMINAR COMBUSTION CONSIDERING DIFFERENT CHEMICAL MECHANISMS

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.