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Measurements in turbulent premixed bluff body flames close to blow-off

James Kariuki (Energy)

 

Understanding the physical processes behind flame extinction is very important as it limits the operability range of engines. This is even more crucial with the prevailing trends of using less fuel, i.e. burning lean, or using alternative fuels whose extinction behaviour is not well understood. This study aims to understand the exact nature of the extinction process of flames using advanced laser diagnostics and high-speed imaging apparatus to obtain non-intrusive, in-situ measurements which allow for a highly detailed quantitative and qualitative analysis of the extinction mechanism.