Stability of non-premixed jet flames and catalytic combustion

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The research relates to the clean, safe and efficient utilization of fuels, an area of high economic priority. The prime focus of the first project is to examine the complex interaction of the key factors that control the stability of non-premixed (diffusion) gaseous jet flames, especially at the extreme limit conditions of lift-off and blow-out and to gain improved understanding of flame stabilization mechanism near critical blowout conditions of both lifted and attached flames. An experimental investigation of the flow characteristics at the flame base using direct visualization and measurements by laser diagnostic techniques will be supplemented with CFD modeling incorporating detailed chemical kinetics. The prime objective is to enhance the stability range and efficiency of the combustion of wide range of gaseous fuels including those of low heating value such as biogases and coa-bed methane and at the same time reduce emissions.