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首页> 外文会议>ERCOFTAC International Symposium on Engineering Turbulence Modelling and Measurements(ETMM6); 20050523-25; Sardinia(IT) >THE EFFECTS OF MICROMIXING ON COMBUSTION EXTINCTION LIMITS FOR MICRO COMBUSTOR APPLICATIONS
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THE EFFECTS OF MICROMIXING ON COMBUSTION EXTINCTION LIMITS FOR MICRO COMBUSTOR APPLICATIONS

机译：微型化对微型燃烧器燃烧极限的影响

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摘要

A preliminary estimation of combustion characteristics in micro combustors is performed with the Perfectly Stirred Reactor model. This model allows us to qualitatively assess the range of stable combustion, as well as the extinction limits for different fuels, inlet temperatures, equivalence ratios and heat loss rates. Linked to low turbulence rates, the weak mixing effects on chemistry are studied with the Partially Stirred Reactor model. Two micromixing models (Vulis and Interaction by Exchange with the Mean) are compared and the crucial influence of mixing at molecular scale on combustion extinction limits is pointed out. Then, practical cases with estimated operating conditions are tested and results are discussed.
机译：利用Perfectly Stirred Reactor模型对微型燃烧器的燃烧特性进行初步估算。该模型使我们能够定性评估稳定燃烧的范围，以及不同燃料的消光极限，进气温度，当量比和热损失率。与低湍流速率有关，使用部分搅拌反应器模型研究了对化学的弱混合作用。比较了两种微混合模型（Vulis和通过与均值交换的相互作用），并指出了在分子尺度上混合对燃烧极限的关键影响。然后，对带有估计运行条件的实际案例进行测试并讨论结果。

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