Experimental and Numerical Study of Flameless Combustion in a Model Gas Turbine Combustor
Experimental and Numerical Study of Flameless Combustion in a Model Gas Turbine Combustor
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DOI：
10.1080/00102200701739164
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发表时间：
2007-12
影响因子：
1.9
通讯作者：
C. Duwig;D. Stankovic;Laszlo Fuchs;Guoqiang Li;E. Gutmark
中科院分区：
文献类型：
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作者：
C. Duwig;D. Stankovic;Laszlo Fuchs;Guoqiang Li;E. Gutmark
无焰燃烧是一种有吸引力的解决方案，以解决运行燃气涡轮机燃烧室时存在的排放和稳定性问题。采用理论、数值和实验相结合的方法对无焰燃气涡轮机燃烧室进行了研究。测量了排放和燃烧稳定性，并讨论了无焰区的限制。使用实验技术和大涡模拟（LES），详细的知识的流场和氧化动力学。特别强调了湍流拟序结构动力学与无焰氧化之间的关系。推导了一个包括详细化学反应的无焰燃烧模拟模型。无焰燃烧的理论分析提供了定义无焰模式范围的2个无量纲数。确定点燃和燃烧的混合物由约50%的新鲜气体和约50%的污染气体组成。
Flameless combustion is an attractive solution to address existing problems of emissions and stability when operating gas turbine combustors. Theoretical, numerical and experimental approaches were used to study the flameless gas turbine combustor. The emissions and combustion stability were measured and the limits of the flameless regime are discussed. Using experimental techniques and Large Eddy Simulation (LES), detailed knowledge of the flow field and the oxidation dynamics was obtained. In particular the relation between the turbulent coherent structures dynamics and the flameless oxidation was highlighted. A model for flameless combustion simulations including detailed chemistry was derived. The theoretical analysis of the flameless combustion provides 2 non-dimensional numbers that define the range of the flameless mode. It was determined that the mixture that is ignited and burnt is composed of ∼ 50% of fresh gases and ∼ 50% vitiated gases.