Comparison of characteristics evaluated by different fractal approaches of soot agglomerates produced by a combustion aerosol generator
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/3768
EDITED VERSION: https://linkinghub.elsevier.com/retrieve/pii/S0894177722000644
DOCUMENT TYPE: article
A study on the fractal geometry, morphology and mass properties of particulate matter carried away by the emissions of a combustion aerosol generation bench was performed. Individual soot agglomerates, collected from exhaust gases using a thermophoretic sampling device, were observed ex-situ using transmission electron microscopy. Those micrographs were firstly used to obtain projected areas, diameters of gyration, and primary particle diameters. Based on this information, the most common overlapping approaches used to estimate the number of primary particles were applied and compared. Morphological descriptors obtained from micrographs were also used to provide approximate estimates of fractal dimensions, mass and density values, as well as mobility and aerodynamic diameters for the agglomerates collected.
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