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首页> 外文期刊>Combustion Science and Technology >DEVELOPMENT AND VALIDATION OF A GLOBAL SOOT MODEL IN TURBULENT JET FLAMES
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DEVELOPMENT AND VALIDATION OF A GLOBAL SOOT MODEL IN TURBULENT JET FLAMES

机译：湍流射流火焰全球烟尘模型的开发与验证

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In this study, a global soot model was developed and validated in three turbulent jet flames fueled by ethylene, methane, and kerosene, which represent lightly sooting, moderately sooting, and heavily sooting fuels, respectively. In this global soot model, soot chemistry was represented by mixture fraction, and the sooting propensities of different fuels are accounted by their laminar smoke point (LSP) heights, as derived from the flame similarity analysis. Two approaches, conditional moment closure (CMC) and alternative-conditional source-term estimation (A-CSE), for the interaction between soot chemistry and turbulent flow were investigated too. Soot was well predicted by this global soot model for all the three flames compared with the experimental measurements and previous predictions. Compared with complex CMC predictions, the comparable predictions by A-CSE in this study suggest that A-CSE could be a compromising solution for soot prediction in fires.
机译：在这项研究中，开发了一种全球烟灰模型，并在由乙烯，甲烷和煤油提供燃料的三种湍流喷射火焰中进行了开发和验证，这三种火焰分别代表轻度烟灰，中度烟灰和重度烟灰燃料。在这种全球烟灰模型中，烟灰化学成分由混合物分数表示，而不同燃料的烟灰倾向由其层流烟点（LSP）高度解释，该高度是根据火焰相似性分析得出的。还研究了烟灰化学和湍流之间相互作用的两种方法，即条件矩闭合（CMC）和替代条件源项估计（A-CSE）。与实验测量结果和先前的预测相比，该全球烟尘模型对这三个火焰均能很好地预测烟尘。与复杂的CMC预测相比，本研究中A-CSE的可比预测表明A-CSE可能是火灾中烟尘预测的折衷解决方案。

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