Numerical Investigation of an Impinging Diffusion Flames-Effects of Fuel Variability

Nadjib Ghiti, Abed Alhalim Bentebbiche, Samir Hanchi

Laboratoire de Mécanique Avancée—LMA, Bab-Ezzouar, Alger, Algeria.
Laboratoire de Mécanique des Fluides, EMP, Bordj El Bahri, Alger, Algeria.

DOI: 10.4236/ojfd.2013.32016                

Abstract

In our study, we investigate the differences between the combustion of different hydrocarbon fuels CH₄, C₃H₈, C₄H₁₀. A numerical simulation of an impinging jet diffusion flames is used. The jet injector has a 10 mm in diameter and the distance between the jet flame and the vertical wall is 2 time half diameter. The fuel jet velocity was fixed for 11.8 m/s, corresponding to a Reynolds number of 6881. The flame characteristics varied from hydrocarbon to another for the same Reynolds number. The combustion products of CO, CO₂, NO, OH, are depending on the methane and propane and butane flames for the same conditions. The temperature of the flame was varied from hydrocarbon to another the same as for the chemical species production rate. The concentration of the thermal and prompt NO pollutant depends on the temperature flow field and on the thermochemical characteristics of the hydrocarbon fuels.

Keywords

Flame; Diffusion; Turbulent; Methane; Propane; Butane

Conflicts of Interest

The authors declare no conflicts of interest.

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