Multiple mapping conditioning for silica nanoparticle nucleation in turbulent flows
Multiple mapping conditioning for silica nanoparticle nucleation in turbulent flows
复制标题
湍流中二氧化硅纳米颗粒成核的多重映射调节
DOI:
10.1016/j.proci.2016.08.088
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
M. J. Cleary
中科院分区:
文献类型:
--
作者:
A. Kronenburg;O. T. Stein;M. J. Cleary
In this paper a study of the sparse-Lagrangian multiple mapping conditioning (MMC) model for the synthesis of silica nanoparticles is presented. This is the first attempt using the model to simulate the formation of kinetically limited solid state species. A simplified differential diffusion model, involving a modified mixing timescale, is used to account for the much lower diffusion of the solid species. The model is validated against DNS of a counterflowing double shear layer of silane and hot combustion products. The reduced reaction mechanism involves silane decomposition and clustering leading to silica. The model is implemented in the context of large eddy simulations (LES). The MMC model allows a sparse distribution of stochastic particles for computing the reactive scalar field, including silica number density, by enforcing the property of localness in mixture fraction space onto the mixing model. Gas phase mixture fraction and fast reactive species are predicted with acceptable accuracy. The prediction of silica number density is qualitatively correct although the magnitude is underpredicted somewhat and the rms is greatly underpredicted. The effects of differential diffusion are clearly visible in the modelling and the simplified model correctly predicts the trend of increasing silica formation when differential diffusion is included.
登录
查看更多内容
DOI:
10.1016/j.proci.2014.05.084
发表时间:
2013
影响因子:
1.5
作者:
A. Attili;F. Bisetti;M. Mueller;H. Pitsch
通讯作者:
H. Pitsch
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
M. Cleary;A. Klimenko
通讯作者:
A. Klimenko
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
V. Babushok;W. Tsang;D. Burgess;M. Zachariah
通讯作者:
M. Zachariah
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
A. Attili;F. Bisetti;M. Mueller;H. Pitsch
通讯作者:
H. Pitsch
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
S. Suh;M. Zachariah;S. Girshick
通讯作者:
S. Girshick