Abstract
In this paper, we perform a comparative numerical analysis of turbulent combustion and harmful substance emission from a homogeneous combustion chamber operating on pure n-decane and mixed n-decane/hydrogen or n-decane/syngas fuels. The calculations were performed using the ANSYS Fluent program, and a reduced kinetic mechanism describing the oxidation of the fuels under consideration was developed. The hydrogen or syngas addition to n-decane in a 50/50 volume ratio is shown to lead to a decrease in temperature both inside the combustion chamber and in its outlet section. There is a simultaneous decrease in the carbon oxides and nitrogen emission. The depletion of the air–fuel mixture with an excess air coefficient of α = 2.3–2.5 sharply reduces the nitric oxide emission and simultaneously increases significantly the carbon monoxide emission. In this depletion, total NO and CO emission index increases more than twofold.
Published Version
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