Print Email Facebook Twitter Survey of the numerical characterisation of 2-D complex clusters Title Survey of the numerical characterisation of 2-D complex clusters Author Maggi, F. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 2003-06-26 Abstract The study of cluster format ion is common in many fields of science and technology (aerosols, colloidal suspensions, hetero-disperse particulate systems in general, growth processes far from equilibrium, etc.). The term "cluster" is a general word indicating an object consisting of a set of elementary unit es organised with a certain structure. In our research, a cluster is an aggregate (floc) of cohesive sediments formed in a turbulent environment from a number of primary particles consisting of clay minerals. The geometric characterisation of a cluster is important to distinguish different features of the object under study. One of the most important aspects of real and artificial clusters is their fractal nature, that is their capability to occupy their own volume. From this point of view, many investigations have been performed about geometrical features (size, volume, density, permeability and porosity properties, etc.) and dynamical features (growth processes, pattern formation, equilibrium). The most important issues highlighted within this survey are: - A hierachical classification tree of fractals on the basis of the large-scales properties that fractals show. - The capacity dimension of a set of testing fractals is computed in order to indicate dimensional length scales different from the support size. - The multifractal approach is applied to characterise the geometrical structure of fractals in general. - A thermodynamic approach is applied to study the complexity of fractal flocs by means of the state variable entropy. - Complex flocs are charactised by means of the traditional Euclidian tools (shape factor, porosity and eccentricity). Subject characterisationcomplex clustersfractalsflocscohesive sedimentproperties To reference this document use: http://resolver.tudelft.nl/uuid:f1032f19-7285-4956-858f-57a167a4aa49 Publisher TU Delft, Department of Hydraulic Engineering Source Report no. 4-02 Part of collection Institutional Repository Document type report Rights (c) 2003 TU Delft, Department of Hydraulic Engineering Files PDF Maggi2002.pdf 9.53 MB Close viewer /islandora/object/uuid:f1032f19-7285-4956-858f-57a167a4aa49/datastream/OBJ/view