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Joint experimental and numerical study of silica particulate synthesis in a turbulent reacting jet
Proceedings of the Combustion Institute ( IF 3.4 ) Pub Date : 2018-09-08 , DOI: 10.1016/j.proci.2018.06.074
Gregor Neuber , Carlos E. Garcia , Andreas Kronenburg , Benjamin A.O. Williams , Frank Beyrau , Oliver T. Stein , Matthew J. Cleary

This paper presents results from a joint experimental and numerical study of silica particulate synthesis for a turbulent reacting jet configuration where a cold jet doped with silane issues into a hot vitiated coflow. The experimental investigation involves simultaneous measurements of elastic light scattering and planar laser-induced fluorescence signals and these are used for validation of a novel computational approach, called PBE-MMC-LES, for the solution of the joint scalar probability density function of the gas phase species and the discretised particulate size distribution. Model validation follows the “paradigm shift” approach which is based on the computation of “predicted signals” which are compared directly with the experimentally-acquired signals. The results demonstrate that PBE-MMC-LES can model particulate inception, surface growth and agglomeration at reasonable computational cost. The agreement between the measured and computed signals is good in the light of the modelling complexities associated with particle flame synthesis, but predictions are rather sensitive to the uncertainties in precursor chemistry leading to nucleation and growth.



中文翻译:

湍流射流中二氧化硅颗粒合成的联合实验和数值研究

本文介绍了二氧化硅的联合实验和数值研究的结果湍流反应射流构型的颗粒合成,其中掺有硅烷的冷射流成热的同流气流。实验研究涉及同时测量弹性光散射和平面激光诱导的荧光信号,这些被用于验证一种新颖的计算方法,称为PBE-MMC-LES,用于解决气相的联合标量概率密度函数。种类和离散的颗粒尺寸分布。模型验证遵循“范式转换”方法,该方法基于“预测信号”的计算,该信号直接与实验获得的信号进行比较。结果表明,PBE-MMC-LES可以以合理的计算成本模拟颗粒的形成,表面生长和团聚。

更新日期:2018-09-09
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