Flame stabilisation and structure in axially staged combustion

轴向分级燃烧中的火焰稳定性和结构

• 批准号: DP200103535
• 负责人: Prof Evatt Hawkes
• 金额: $ 29.49万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2020
• 资助国家: 澳大利亚
• 起止时间: 2020-01-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP200103535
• 关键词: Flame; stabilisation; structure; axially; staged

We aim to improve fundamental understanding of flame stabilisation and structure in conditions relevant to axially staged combustion employed in gas turbines, in which an initial ultra-lean premixed stage is followed by a short residence time stage at higher equivalence ratios. This concept enables high turbine entry temperatures and thus high efficiency while limiting emissions of nitrogen oxides, and, importantly, enables improved operational flexibility in turndown and in burning fuels with different reactivities, such as hydrogen. This project will apply large-scale direct numerical simulations to advance fundamental understanding of this unusual combustion mode, and develop practical models able to predict its behaviour.

我们的目标是提高对燃气轮机轴向分级燃烧相关条件下火焰稳定性和结构的基本理解，其中初始超贫预混阶段之后是较高当量比的短停留时间阶段。这一概念可实现较高的涡轮机入口温度，从而实现高效率，同时限制氮氧化物的排放，而且重要的是，可以提高调节和燃烧具有不同反应性的燃料（例如氢气）的操作灵活性。该项目将应用大规模直接数值模拟来增进对这种不寻常燃烧模式的基本理解，并开发能够预测其行为的实用模型。