Morphology-dependent random binary fragmentation of in silico fractal-like agglomerates

被引：3

作者：

Drossinos, Y. ^{[1
]}

Melas, A. D. ^{[2
]}

Kostoglou, M. ^{[3
]}

Isella, L. ^{[4
]}

机构：

[1] European Commiss, Joint Res Ctr, I-21027 Ispra, VA, Italy

[2] CPERI CERTH, Aerosol & Particle Technol Lab, Thessaloniki 57001, Greece

[3] Aristotle Univ Thessaloniki, Dept Chem, Thessaloniki 54124, Greece

[4] European Commiss, DG Trade, B-1040 Brussels, Belgium

来源：

EPL | 2019年 / 127卷 / 04期

基金：

欧盟地平线“2020”;

关键词：

BREAK-UP; MODELS; SIZE; AGGREGATION; COAGULATION; STRESSES; KINETICS;

D O I：

10.1209/0295-5075/127/46002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Linear binary fragmentation of synthetic fractal-like agglomerates composed of spherical, equal-size, touching monomers is numerically investigated. Agglomerates of different morphologies are fragmented via random bond removal. The fragmentation algorithm relies on mapping each agglomerate onto an adjacency matrix. The numerically determined fragment size distributions are U-shaped, clusters break predominantly into two largely dissimilar fragments, becoming more uniform as the fractal dimension decreases. A symmetric beta distribution reproduces the fragment distribution rather accurately. Its exponent depends on the structure (fractal dimension) and number of monomers of the initial agglomerate. A universal fragment distribution, a function only of the initial fractal dimension, is derived by requiring that it satisfy the fragmentation conversation laws and the straight-chain limit. We argue that the fragmentation rate is proportional to the initial agglomerate size.

引用

页数：7