Tecniche avanzate per l'analisi di sensitività globale: applicazione alla contaminazione delle acque sotterranee.

Viroli, Michele (2012) Tecniche avanzate per l'analisi di sensitività globale: applicazione alla contaminazione delle acque sotterranee. [Laurea specialistica a ciclo unico], Università di Bologna, Corso di Studio in Ingegneria edile/ architettura [TU-DM509], Documento ad accesso riservato.
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The thesis is framed within the field of the stochastic approach to flow and transport themes of solutes in natural porous materials. The methodology used to characterise the uncertainty associated with the modular predictions is completely general and can be reproduced in various contexts. The theme of the research includes the following among its main objectives: (a) the development of a Global Sensitivity Analysis on contaminant transport models in the subsoil to research the effects of the uncertainty of the most important parameters; (b) the application of advanced techniques, such as Polynomial Chaos Expansion (PCE), for obtaining surrogate models starting from those which conduct traditionally developed analyses in the context of Monte Carlo simulations, characterised by an often not negligible computational burden; (c) the analyses and the understanding of the key processes at the basis of the transport of solutes in natural porous materials using the aforementioned technical and analysis resources. In the complete picture, the thesis looks at the application of a Continuous Injection transport model of contaminants, of the PCE technique which has already been developed and applied by the thesis supervisors, by way of numerical code, to a Slug Injection model. The methodology was applied to the aforementioned model with original contribution deriving from surrogate models with various degrees of approximation and developing a Global Sensitivity Analysis aimed at the determination of Sobol’ indices.

Tipologia del documento
Tesi di laurea (Laurea specialistica a ciclo unico)
Autore della tesi
Viroli, Michele
Relatore della tesi
Correlatore della tesi
Corso di studio
Ordinamento Cds
Parole chiave
ASG, PCE, Sobol
Data di discussione della Tesi
20 Dicembre 2012

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