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Characterization of Biogas-Syngas Turbulent MILD ‎Combustion in the Jet in Hot Co-Flow Burner
Author(s): oussama benbouaziz, A. Mameri, HADEF Amar, Z. Aouachria
Keywords: Biofuels; Chemical mechanism; MILD combustion; Turbulent non-premixed combustion.
Moderate or Intense Low–oxygen Diluted (MILD) combustion is a promising technology with interesting ‎properties such as high efficiency and zero-emission. The biogas-syngas mixture is also considered a ‎promising new renewable biofuel with low emissions. This work aims to examine the effects of several ‎parameters on the biogas-syngas flame structure and emissions under MILD conditions in the Jet in Hot ‎Co flow (JHC) burner. The turbulence is modeled by the modified standard k-ε model; whereas ‎combustion-turbulence interaction is handled by the Eddy Dissipation Concept (EDC) in conjunction with ‎three detailed reaction mechanisms, namely: GRI-Mech 3.0, GRI-Mech 2.11, and DRM 2.11. Effects of ‎biogas-syngas composition, temperature, and oxygen concentration in the hot co-flow and Reynolds ‎number of the fuel jet have been elucidated. Results show that flame structure is more sensitive to the ‎increase of hydrogen in syngas than that of methane in biogas. An increase of oxygen concentration or ‎temperature in the co-flow stream leads to more NO formation whereas Reynolds number augmentation ‎reduced them. Furthermore, NO species production is globally governed by the NNH route‎‎.

Journal of Applied Fluid Mechanics

The Journal of Applied Fluid Mechanics (JAFM) is an international, peer-reviewed journal which covers a wide range of theoretical, numerical and experimental aspects in fluid mechanics. The emphasis is on the applications in different engineering fields rather than on pure mathematical or physical aspects in fluid mechanics. Although many high quality journals pertaining to different aspects of fluid mechanics presently exist, research in the field is rapidly escalating.