Abstract We present in this short communication a modification to our previous ethanol reduced combustion chemistry (Millan-Merino, 2018) that eliminates nonphysical values of the species concentrations which we discovered in applying the mechanism to the combustion of an isolated ethanol droplet. This unsteady test is reported here to check the multipurpose character of the reduced mechanism for a problem that combines non-homogeneous autoignition, rich and lean premixed-flame propagation, and the development of a diffusion flame, as well as a the presence of a cold moving boundary at the droplet surface. During the computations, production and consumption rates of the α-hydroxyethyl (CH3CHOH) intermediary radical became unbalanced, invalidating its steady-state hypothesis, which was used during the derivation of the reduced scheme. This difficulty is removed here by taking CH3CHOH out of steady state, thereby augmenting slightly the reduced mechanism.

中文翻译：

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用于乙醇燃烧的改良多用途还原化学

摘要 我们在这篇简短的交流中提出了对我们之前的乙醇减少燃烧化学（Millan-Merino，2018 年）的修改，消除了我们在将该机制应用于孤立乙醇液滴燃烧时发现的物种浓度的非物理值。此处报告了此不稳定测试，以检查简化机制的多用途特性，该问题结合了非均质自燃、富和贫预混火焰传播、扩散火焰的发展以及冷的存在液滴表面的移动边界。在计算过程中，α-羟乙基 (CH3CHOH) 中间基团的生产和消耗率变得不平衡，使其稳态假设无效，该假设在推导简化方案时使用。