Modeling soot formation in diesel-biodiesel flames
Modeling soot formation in diesel-biodiesel flames
复制标题
DOI：
10.1016/j.fuel.2017.06.024
复制
发表时间：
2017-10
期刊：
影响因子：
7.4
通讯作者：
Alumah Arad;E. Sher;G. Enden
中科院分区：
文献类型：
--
作者：
Alumah Arad;E. Sher;G. Enden
我们提出了一个修改后的唯象模型的碳烟形成过程中发生的柴油-生物柴油混合物的燃烧过程。柴油-生物柴油混合物由三个通用燃料组表示：芳族、脂族和酯燃料，使得定量地考虑柴油燃料的芳族含量和生物柴油燃料的氧含量。对于特定的选定共混物，评价烟灰形成。不同的氧化反应性之间的碳烟颗粒来自柴油和生物柴油占通过它们的氧化速率。本现象学煤烟模型的使用证明了它的实施在计算流体动力学（CFD）的商业代码的情况下，标准的烟点灯。模型预测和实验结果之间取得了很好的一致性，在最大碳烟体积分数（SVF）和减少时，从普通柴油切换到柴油-生物柴油混合物。
We propose a modified phenomenological model for soot formation that occurs during the combustion process of diesel-biodiesel blends. The diesel-biodiesel blend is represented by three generic fuel groups: aromatic, aliphatic, and ester fuels, such that the aromatic content of the diesel fuel and the oxygen content of the biodiesel fuel are considered quantitatively. The soot formation is evaluated for specific selected blends. The different oxidative reactivity between soot particles originating from diesel and biodiesel is accounted for via their oxidation rates. The use of the present phenomenological soot model is demonstrated by its implementation in a computational fluid dynamics (CFD) commercial code for the case of the standard smoke point lamp. Very good agreement was achieved between model predictions and experimental results in terms of maximal soot volume fraction (SVF) and its decrease when switching from plain diesel to a diesel-biodiesel blend.