Numerical simulation of a turbulent partially premixed flame with inhomogeneous equivalence ratio

• Published in: Fuel (Guildford) Vol. 124; pp. 57 - 65
• Main Authors: Benarous, A., Karmed, D., Liazid, A., Champion, M.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 15.05.2014; Elsevier
• Subjects: Applied sciences; Bunsen burner; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fuels; LW–P model; Partially premixed combustion; Scalar dissipation; LW–P model; Scalar dissipation; Partially premixed combustion; Bunsen burner; LW-P model; Premixed flame; Numerical simulation; Combustion
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/j.fuel.2014.01.069

•The model uses a two-scalar four delta presumed Pdf to describe mixing and reactions.•The LW–P model is validated against the ICARE lean premixed flame.•The model successfully predicts flow dynamics and turbulent flame characteristics. Reynolds averaged numerical simulation (RANS) of a turbulent partially premixed flame is performed using a presumed probability density function (Pdf) approach. The mixture fraction and the fuel mass fraction are respectively chosen to describe the local composition and the chemical reaction progress. The so called LW–P model was employed for the calculation of a lean methane–air flame stabilized by a stoichiometric pilot-flame. Numerical predictions of the jet-core as well as the mean quantities of the flame, namely the modified progress variable and the static temperature are compared successfully with the experiments.