Title: Time Evolution of the Aggregate Fractal Dimension from Langevin Dynamics
Authors: ISELLA LorenzoDROSSINOS Ioannis
Citation: Proceedings of the European Aerosol Conference 2008 p. T03A005O
Publisher: Hellenic Association for Aerosol Research
Publication Year: 2008
JRC N°: JRC49182
URI: http://www.eac2008.org/EAC2008-Program.htm
http://publications.jrc.ec.europa.eu/repository/handle/JRC49182
Type: Contributions to Conferences
Abstract: Combustion-generated solid nanoparticles are often fractal-like aggregates (clusters) of smaller units taken to be spherical primary particles, monomers. The aggregate mass exhibits a power-law dependence on a characteristic size, usually identified with the radius of gyration. The power-law exponent is the aggregate fractal dimension. We investigate the non-equilibrium Brownian particle dynamics by solving the Langevin equations for a system of interacting aggregates in three dimensions. Our objective is to study the time evolution of the aggregate fractal dimension as an indicator of the varying aggregate morphology.
JRC Institute:Institute for Environment and Sustainability

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