Flame quenching and Lean blow-off limits of new zero/low-carbon fuels towards delivering a green Aviation; a combined Modelling & Experimental study

替代可持续燃料，如氢、氨、从可持续发展路径生产的生物/合成燃料，在最近的政策白皮书中被强调为解决航空业脱碳问题和帮助实现净零的一条途径。最近的零排放战略强调了加速可持续航空燃料(SAF)生产和基础设施的投资，以及在实现零排放飞行方面的研发优先事项。对于氨、氢和其他合成或低碳航空燃料，它们的行为与传统煤油型燃料非常不同，这将需要开发针对新燃料量身定做的新发动机技术，无论是纯成分还是混合燃料。虽然可以从化学反应动力学机制的角度单独理解这些燃料的基本燃烧行为，但在高压下这一点不太确定，关于火焰稳定性的主要挑战仍然存在。FLAME项目专注于净零推进力，评估燃料对燃气轮机性能和可操作性的影响。将开发新的光学诊断和模型，使人们能够了解新的生物/合成衍生的零/低碳燃料的火焰熄灭和贫化喷吹(LBO)极限，从而加强它们在燃气轮机燃烧室中的应用。

Alternative sustainable fuels, such as hydrogen, ammonia, bio/synthetic fuels produced from sustainable pathways, have been highlighted in recent policy whitepapers as a route to address the problems in decarbonising the aviation sector and to help deliver net-zero. The recent Jet Zero Strategy has highlighted the investment to accelerate the production and infrastructure of sustainable aviation fuels (SAF), and R&D priorities in delivering Zero-emission flight. For the likes of ammonia, hydrogen and other synthetic or low carbon aviation fuels, that behave very differently to conventional kerosene-type fuels, this will entail the development of new engine technologies tailored to the new fuels, either pure component or blended. While the fundamental combustion behaviour in terms of chemical kinetic reaction mechanism may be understood for many of these fuels in isolation, at elevated pressure this is less certain, and major challenges remain concerning flame stability.FLAME project focuses on net-zero propulsion, evaluating the fuels' impact on gas turbine performance and operability. Novel optical diagnostics and models will be developed that will enable the understanding of flame quenching and the lean blow-off (LBO) limits of new bio/synthetic-derived zero/low-carbon fuels, enhancing their application in gas turbine combustors.