Effect of supersaturation distribution on particle heterogeneous condensation in growth tube

IF 2.1 4区 环境科学与生态学 Q3 ENGINEERING, CHEMICAL
Anwen Dai, Jun Zhang, Anjin Li
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引用次数: 0

Abstract

Supersaturation is a critical factor influencing the growth of fine particles in heterogeneous nucleation processes. To further investigate its effects on particle growth behavior, this study employs numerical simulations, coupling the particle growth rate equation with a population balance model to systematically analyze the impact of various supersaturation distributions on particle growth. The results indicate that, in the axial direction, the closer the supersaturation peak is to the outlet of the growth tube, the more effective the particle growth, with a maximum increase of 10.20%. In the radial direction, higher supersaturation near the tube wall results in better particle growth at the outlet, with a maximum increase of 28.70%. A more uniform supersaturation field is found to promote particle growth. Conversely, when the supersaturation near the wall is relatively low, particles are less likely to be effectively activated, leading to restricted growth. Additionally, this paper explores the growth of fine particles under different supersaturation field configurations, demonstrating the generality of the observed patterns.

过饱和分布对生长管内颗粒非均相凝结的影响
过饱和是影响非均相成核过程中细颗粒生长的关键因素。为了进一步研究其对颗粒生长行为的影响,本研究采用数值模拟的方法,将颗粒生长速率方程与种群平衡模型相结合,系统分析了各种过饱和分布对颗粒生长的影响。结果表明:在轴向上,过饱和峰越靠近生长管出口,颗粒生长越有效,最大增幅为10.20%;在径向上,靠近管壁的过饱和度越高,出口颗粒生长越好,最大增幅为28.70%。更均匀的过饱和场促进了颗粒的生长。反之,当壁面附近的过饱和度较低时,颗粒不易被有效活化,导致生长受限。此外,本文还探讨了不同过饱和场构型下细颗粒的生长,证明了所观察到的模式的普遍性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Environmental Progress & Sustainable Energy
Environmental Progress & Sustainable Energy 环境科学-工程:化工
CiteScore
5.00
自引率
3.60%
发文量
231
审稿时长
4.3 months
期刊介绍: Environmental Progress , a quarterly publication of the American Institute of Chemical Engineers, reports on critical issues like remediation and treatment of solid or aqueous wastes, air pollution, sustainability, and sustainable energy. Each issue helps chemical engineers (and those in related fields) stay on top of technological advances in all areas associated with the environment through feature articles, updates, book and software reviews, and editorials.
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