۳D Investigating of Flameless Oxidation Behavior Using OpenFoam

In this paper, the ۳D non-premixed flameless oxidation of biogas-air has been investigated by the OpenFoam software ReactingFoam solver. The control volume method with coupling pressure and the velocity fields of PISO algorithm is used for solving the governing equations. Since the ReactingFoam solver is unable to simulate the pollutant emissions, in this paper, this solver developed to calculate the pollutant, and the results are compared with published experimental work. The good agreement between the numerical and experimental data validates the numerical method and confirms its ability to model the similar cases. So the effect of changing combustion chamber pressure onproduce pollutants and combustion efficiency has been investigated. The results are shown, pressure reduction in combustion chamber causes reduction in amount of NO, CO, and H۲O output from the combustion chamber and an increasement in amount of CO۲.