Modelling of soot formation in laminar diffusion flames using a comprehensive CFD-PBE model with detailed gas-phase chemistry
Modelling of soot formation in laminar diffusion flames using a comprehensive CFD-PBE model with detailed gas-phase chemistry
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DOI：
10.1080/13647830.2016.1213426
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发表时间：
2017-01
影响因子：
1.3
通讯作者：
Petros Akridis;S. Rigopoulos
中科院分区：
文献类型：
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作者：
Petros Akridis;S. Rigopoulos
一个离散的人口平衡方程（PBE）耦合内部的计算流体动力学（CFD）代码，以模拟碳烟形成层流扩散火焰。的非定常的Navier-Stokes，物种和焓输运方程和空间分布的离散PBE的烟尘颗粒的解决在一个耦合的方式，连同全面的气相化学和光学薄辐射模型，从而产生完整的粒径分布的烟尘颗粒。成核，表面生长和氧化被纳入PBE使用乙炔为基础的烟灰模型。通过与来自Santoro喷射燃烧器的实验结果比较来研究所提出的方法的潜力[Santoro，Semerjian和Dobbins，扩散火焰中的烟尘颗粒测量，燃烧和火焰，第51卷（1983），第110 - 111页]。203-218;叶文辉，火焰中碳烟颗粒的扩散与扩散，燃烧科学与技术，第53卷（1987），页。89-115]的三个层流轴对称非预混乙烯火焰：不吸烟，初期吸烟和吸烟火焰。总体而言，良好的协议之间观察到的数值和实验结果。
A discretised population balance equation (PBE) is coupled with an in-house computational fluid dynamics (CFD) code in order to model soot formation in laminar diffusion flames. The unsteady Navier–Stokes, species and enthalpy transport equations and the spatially-distributed discretised PBE for the soot particles are solved in a coupled manner, together with comprehensive gas-phase chemistry and an optically thin radiation model, thus yielding the complete particle size distribution of the soot particles. Nucleation, surface growth and oxidation are incorporated into the PBE using an acetylene-based soot model. The potential of the proposed methodology is investigated by comparing with experimental results from the Santoro jet burner [Santoro, Semerjian and Dobbins, Soot particle measurements in diffusion flames, Combustion and Flame, Vol. 51 (1983), pp. 203–218; Santoro, Yeh, Horvath and Semerjian, The transport and growth of soot particles in laminar diffusion flames, Combustion Science and Technology, Vol. 53 (1987), pp. 89–115] for three laminar axisymmetric non-premixed ethylene flames: a non-smoking, an incipient smoking and a smoking flame. Overall, good agreement is observed between the numerical and the experimental results.