Consideration of low viscous droplet breakage in the framework of the wide energy spectrum and the multiple fragments
Consideration of low viscous droplet breakage in the framework of the wide energy spectrum and the multiple fragments
复制标题
宽能谱和多碎片框架下低粘性液滴破碎的考虑
DOI：
10.1002/aic.14830
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发表时间：
2015-07
期刊：
影响因子：
3.7
通讯作者：
He’an Luo
中科院分区：
文献类型：
--
作者：
Yaowen Ding;Ningning Gao;Jin Fu;He’an Luo
提出了一种改进的低粘度液滴破碎模型。与以往考虑惯性子范围并采用二元破裂假设不同，本文在多碎片和宽能谱(即同时包括耗散范围、惯性子范围和含能范围)的框架内考虑了液滴的破坏。通过引入相互作用力，考虑了液滴与周围流体之间的相互作用。考虑了由这些相互作用引起的表面变形和振荡对多重破裂约束的影响。这些因素在现有的模型中被忽略了。研究发现，随着母液滴尺寸的增大，宽能谱分布对破碎频率的非单调演化有重要影响。本文预测的累积体积分数与实验数据吻合较好。©2015美国化学工程师学会学报，61：2147-2168,2015
An improved model for low viscous droplet breakage has been developed. Unlike the previous work that considered the inertia subrange and adopted the assumption of binary breakage, this work considered the breakage of droplets in the framework of the multiple fragments and the wide energy spectrum (i.e., including the dissipation range, the inertia subrange, and the energy containing range simultaneously). The previous interactions between the droplet and the surrounding fluids have been considered through introducing the interaction forces. The effect of the surface deformation and oscillation resulting from these interactions on the constraints of multiple breakages has been accounted for. These factors have been neglected in the existing models. The wide energy spectrum distribution was found to have an important effect on the nonmonotone evolution of breakage frequency with increasing parent droplet size. The cumulative volume fractions predicted by this work showed a better agreement with the experimental data. © 2015 American Institute of Chemical Engineers AIChE J, 61: 2147–2168, 2015
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