Lift off and breakage of the structure of fractal - like aggregates

Łukasz Żywczyk , Arkadiusz Moskal , Rafał Przekop

Abstract

A new mathematical model of aggregate of N identical spherical particles is proposed. Model is able to simulate aggregates with different flexibility. Mutual forces in normal direction between primary particles are described by spring-mass system with parameters related to the material properties. The flexibility of aggregate structure is controlled by harmonic interaction functions. Developed model was used to study the lift-off phenomenon of aggregates in the fluid. Simulation were performed for numerically generated few population of fractal-like aggregates by Diffusion Limited Aggregation algorithm (DLA), which differ with number of primary particles in aggregate’s structure and fractal dimension. Numerical results show that aggregates with more open morphology with fractal dimension in the range of Df = 1.6 - 1.8 are lifted-off easier, compared to aggregates with compacted structure. The effectiveness of the lift off is enhanced by the deformation of the aggregate caused by the flexibility of its structure.
Author Łukasz Żywczyk (FCPE / CIPE) - Institute of Fundamental Technological Research of the Polish Academy of Sciences
Łukasz Żywczyk,,
- Chair of Integrated Process Engineering
, Arkadiusz Moskal (FCPE / CIPE)
Arkadiusz Moskal,,
- Chair of Integrated Process Engineering
, Rafał Przekop (FCPE / CIPE)
Rafał Przekop,,
- Chair of Integrated Process Engineering
Journal seriesChemical Engineering Transactions, ISSN 2283-9216, e-ISSN 1974-9791, (0 pkt)
Issue year2019
Vol74
Pages457-462
Publication size in sheets0.5
ASJC Classification1500 General Chemical Engineering
DOIDOI:10.3303/CET1974077
URL https://www.aidic.it/cet/19/74/077.pdf
Languageen angielski
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Żywczyk Ł. (i in.) - Lift off and...pdf 910.13 KB
Score (nominal)5
ScoreMinisterial score = 5.0, 15-07-2019, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2016 = 0.595
Citation count*
Additional fields
UwagiThis work was supported by National Science Centre, Poland under Grant number UMO 2015/19/B/ST8/0599
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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