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首页> 外文会议>AIAA/ASME/SAE/ASEE joint propulsion conference exhibit >High Intensity Colorless Distributed Combustion for Ultra Low Emissions and Enhanced Performance
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High Intensity Colorless Distributed Combustion for Ultra Low Emissions and Enhanced Performance

机译：高强度无色分布式燃烧，可实现超低排放和增强的性能

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Combustion characteristics of colorless distributed combustion have been investigated for application to gas turbine combustors. Very high intensity distributed combustion has been shown for application to stationary gas turbine engines. Various configurations examined have revealed reverse cross-flow mode to be more favorable for desirable combustion characteristics. The reverse-cross flow geometry is further investigated experimentally at range thermal intensities from 53-85MW/m~3-atm with specific focus on the exhaust emissions, radical emission, global flame photographs and flow field using novel but simplified geometry for easy transition to applications in gas turbine engine applications. The high combustion intensity demonstrated here is higher than that used in present stationary gas turbine engines. Numerical simulations are also performed and compared with the experiments for the new design configuration under non-reacting conditions. Ultra low NOx emissions are achieved for both the novel premixed (lppm) and non-premixed (4ppm) combustion modes reported here. Carbon monoxide levels of about 30ppm are achieved in both novel premixed and non-premixed modes of combustion with a pressure drop of less than 5% across the combustor at the favorable condition. Almost no visible flame color in the reaction zones are observed for both novel premixed and non-premixed modes with volume distributed combustion so that this mode is termed as colorless distributed combustion. This mode of volume distributed colorless combustion is dramatically different than that used in contemporary gas turbine combustion operating under lean premixed, lean direct injection or rich burn, quick quench lean burn gas turbine combustion
机译：研究了无色分布燃烧的燃烧特性，将其应用于燃气轮机燃烧室。已显示出非常高强度的分布式燃烧，可应用于固定式燃气涡轮发动机。所检查的各种构造已经揭示出反向错流模式对于期望的燃烧特性更有利。在53-85MW / m〜3-atm的热强度范围内，对逆流流体的几何形状进行了进一步的实验研究，使用新颖但经过简化的几何形状简化了过渡过程，从而重点研究了废气排放，自由基排放，整体火焰照片和流场。在燃气涡轮发动机中的应用。这里展示的高燃烧强度高于目前的固定式燃气涡轮发动机中使用的燃烧强度。在非反应条件下，还进行了数值模拟，并与新设计配置的实验进行了比较。对于此处报告的新型预混（1ppm）和非预混（4ppm）燃烧模式，都实现了超低的NOx排放。在新颖的预混合和非预混合燃烧模式下，在有利的条件下，整个燃烧室的压降均小于5％，一氧化碳水平达到约30ppm。对于具有容积分布燃烧的新型预混合模式和非预混合模式，在反应区中几乎没有观察到可见的火焰色，因此该模式被称为无色分布式燃烧。这种体积分布的无色燃烧模式与在稀薄预混，稀薄直接喷射或浓燃烧，快速淬火稀薄燃烧的燃气轮机燃烧下运行的当代燃气轮机燃烧所使用的模式有显着不同。

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