化工学报2017，Vol.68Issue(1)：119-128,10.DOI:10.11949/j.issn.0438-1157.20160874
基于微分代数积分矩量法的聚并器超细颗粒聚团研究
Simulation of ultrafine particle aggregation in aggregation device by differential-algebraic quadrature method of moments
摘要
Abstract
The ultrafine particle aggregation arising from Brownian aggregation and Turbulence aggregation in turbulence aggregation device was studied, especially influences of short range force (van der Walls attraction and electric repulsion) among particles and hydrodynamics between particle and gas upon particle aggregation. Based on user-defined aggregation kernel of UDF function of FLUENT software, influences of short range force and hydromechanics among particles upon aggregation rate were studied and aggregation kernel was corrected using collision efficiencyα. Then, a corrected turbulence aggregation model was established and was compared with an ideal turbulence aggregation model. Particle aggregation process underwent numerical simulation using population balance model (PBM) coupling CFD and population balance equation was solved using differential-algebraic framework (DAE-QMOM). The results showed an error of 8.92% between the ideal turbulence aggregation model and the experimental result and an error of 3.35%between the corrected turbulence aggregation model and the experimental result, the latter conformed to practical situations better. Differential-algebraic quadrature method of moment as a high efficiency, a small error rate and a high reliability, it has obvious advantages over PD quadrature method of moment.关键词
超细颗粒物/湍流聚并器/群体平衡模型/颗粒聚团/聚并率/微分代数积分矩量法Key words
ultrafine particle/turbulence aggregation device/population balance model/particle aggregation/aggregation rate/differential-algebraic framework quadrature method of moments分类
能源科技引用本文复制引用
郑建祥,许帅,王京阳,史梦燚,汪龙..基于微分代数积分矩量法的聚并器超细颗粒聚团研究[J].化工学报,2017,68(1):119-128,10.基金项目
吉林省教育厅“十三五”科研项目(［2016］第81号)；吉林市科技发展项目(20156405)。 （［2016］第81号）
