Abstract
A pilot 10 kW burner of novel design using a concept of hydrocarbon fuel combustion enhancement by axial injection of superheated water steam jet is considered. Numerical simulation of turbulent reacting flow and heat transfer, including the radiative heat transfer, soot and NOx formation processes, during combustion of vaporized diesel fuel in this burner has been performed in 2D axisymmetric formulation. As a combustion model, the conserved scalar approach with constrained-equilibrium chemistry model has been used with account for 3 inlet streams and 32 species. The field distributions of velocity, temperature, concentrations of gas species and soot have been obtained from numerical predictions. The numerical results allow to conclude that the effect of combustion intensification, observed in the burner outer flame, arises from the fuel gasification process enhanced by the influence of steam jet.
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