Fragmentation and bond strength of airborne diesel soot agglomerates
نویسندگان
چکیده
منابع مشابه
A method to determine the fractal dimension of diesel soot agglomerates.
Soot agglomerates emitted by diesel engines are composed of primary particle forming irregular clusters. Such irregularity can be quantified by the fractal dimension, whose determination depends on certain parameters not unanimously established, such as the prefactor of the power law relationship. Mean values of the fractal dimension of large collections of agglomerates are usually determined i...
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Production of soot in high pressure diesel sprays is known to be dependent on combustion chamber temperature and pressure. To a lesser extent, the injector type and injection pressure also influence soot formation. In real engines, separating the individual role of these parameters is difficult as they are closely coupled. Here we present an optically based method to measure both temperature an...
متن کاملFragmentation and restructuring of soft-agglomerates under shear.
Soft-agglomerate restructuring, break-up (or fragmentation) and relaxation are studied in a simple shear flow by a discrete element method (DEM). The agglomerates, held together by van der Waals forces, rotate in the shear flow and are stretched into nearly linear structures (fractal dimension approaches unity) until they fracture at their weakest point resulting in lognormally-shaped fragment ...
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ژورنال
عنوان ژورنال: Particle and Fibre Toxicology
سال: 2008
ISSN: 1743-8977
DOI: 10.1186/1743-8977-5-9