Numerical modelling and structural optimization of multifunctional maritime structures aimed to protect harbours and produce energy

Palma, Giuseppina (2020) Numerical modelling and structural optimization of multifunctional maritime structures aimed to protect harbours and produce energy, [Dissertation thesis], Alma Mater Studiorum Università di Bologna. Dottorato di ricerca in Ingegneria civile, chimica, ambientale e dei materiali, 32 Ciclo. DOI 10.48676/unibo/amsdottorato/9192.
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The main objective of this PhD thesis is to optimize a specific multifunctional maritime structure for harbour protection and energy production, named Overtopping Breakwater for Energy Conversion (OBREC), developed by the team of the University of Campania. This device is provided with a sloping plate followed by a unique reservoir, which is linked with the machine room (where the energy conversion occurs) by means of a pipe passing through the crown wall, provided with a parapet on top of it. Therefore, the potential energy of the overtopping waves, collected inside the reservoir located above the still water level, is then converted by means of low – head turbines. In order to improve the understanding of the wave – structure interactions with OBREC, several methodologies have been used and combined together: i. analysis of recent experimental campaigns on wave overtopping discharges and pressures at the crown wall on small – scale OBREC cross sections, carried out in other laboratories by the team of the University of Campania; ii. new experiments on cross sections similar to the OBREC device, planned and carried out in the hydraulic lab at the University of Bologna in the framework of this PhD work; iii. numerical modelling with a 1 – phase incompressible fluid model IH – 2VOF, developed by the University of Cantabria, and with a 2 – phase incompressible fluid model OpenFOAM, both available from the literature; iv. numerical modelling with a new 2 – phase compressible fluid model developed in the OpenFOAM environment within this PhD work; v. analysis of the data gained from the monitoring of the OBREC prototype installation.

Tipologia del documento
Tesi di dottorato
Palma, Giuseppina
Dottorato di ricerca
Settore disciplinare
Settore concorsuale
Parole chiave
Multifunctional maritime structure; Wave Energy Converter; hydraulic performance; structural optimization; harbour safety; wave-structure interactions; compressible flows; openFOAM; experiments;
Data di discussione
24 Marzo 2020

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