Abstract This study aims to disclose the role of molecular interactions of iso-octane ethanol blend during droplet combustion. The iso-octane ethanol composition which has the potential to form molecular clusters was analyzed using integer interaction modeling with mole ratio. Comparison of mole-based compositions was converted to a volume base to verify empirically using the single droplet burning method. The molecular interaction analysis gave the composition close to the molecular cluster composition was 10, 15, 25, 40, 50, 60, 70, 80, and 90% v/v. Ethanol fractions of 20% and 30% v/v were also tested using the same method as a mixture that do not form the molecular cluster. This study shows that the total molecular interaction forces on molecular clusters are inversely proportional to puffing events during single droplet combustion. The number of free molecules that do not form molecular clusters tends to produce micro-explosions at the final stage of single droplet combustion. The research also revealed that the increasing ethanol fractions in molecular clusters tends to reduce the combustion rate constant exponentially.

中文翻译：

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单滴燃烧过程中极性乙醇诱导在各种异辛烷乙醇燃料混合物中的作用

摘要 本研究旨在揭示异辛烷乙醇混合物在液滴燃烧过程中分子间相互作用的作用。使用具有摩尔比的整数相互作用模型分析具有形成分子簇的潜力的异辛烷乙醇组合物。将基于摩尔的组合物的比较转换为基于体积的比较，以使用单液滴燃烧方法进行经验验证。分子相互作用分析给出接近分子簇组成的组成为 10、15、25、40、50、60、70、80 和 90% v/v。20% 和 30% v/v 的乙醇馏分也使用与不形成分子簇的混合物相同的方法进行测试。该研究表明，在单液滴燃烧过程中，分子簇上的总分子相互作用力与喷气事件成反比。不形成分子簇的自由分子数量多，往往在单液滴燃烧的最后阶段产生微爆。研究还表明，分子簇中乙醇含量的增加往往会成倍地降低燃烧速率常数。