Relevant bibliographies by topics / SCUOLA DI DOTTORATO DI ENVIRONMENTAL AND INDUSTRIAL FLUID MECHANICS / Dissertations / Theses
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Dissertations / Theses on the topic 'SCUOLA DI DOTTORATO DI ENVIRONMENTAL AND INDUSTRIAL FLUID MECHANICS'

Author: Grafiati
Published: 11 March 2023
Last updated: 31 July 2025

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Consult the top 17 dissertations / theses for your research on the topic 'SCUOLA DI DOTTORATO DI ENVIRONMENTAL AND INDUSTRIAL FLUID MECHANICS.'

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1

Stipcich, Goran. "High-order methods for computational fluid dynamics." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7764.

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2010/2011<br>In the past two decades, the growing interest in the study of fluid flows involving discontinuities, such as shocks or high gradients, where a quadratic-convergent method may not provide a satisfactory solution, gave a notable impulse to the employment of high-order techniques. The present dissertation comprises the analysis and numerical testing of two high-order methods. The first one, belonging to the discontinuous finite-element class, is the discontinuous control-volume/finite-element method (DCVFEM) for the advection/ diffusion equation. The second method refers to the hi
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2

Vukicevic, Marija. "Vortex formation behind movable leaflet: experimental and numerical studies." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/5368.

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2009/2010<br>Fluid structure interaction (FSI) is one of fundamental phenomena encountered everywhere in nature or in industrial systems as well as one of the most studied and the most challenging topics in the fluid mechanics. Its research presents the core objective of this dissertation, along with experimental study of artificial heart devices. Better understanding of FSI could turn the still unexploited phenomenon into a powerful tool for resolving wealthy of multi-physics problems. Recently computational fluid dynamics community has been putting enormous efforts to uncover, make clear and
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3

Sosnowski, Pawel. "Numerical investigation of evaporation and condensation of thin films in conjugated heat transfer systems." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8662.

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2011/2012<br>Evaporation and condensation of thin liquid films on solid surfaces are common elements of industrial processes. In many cases they have a significant impact on the physics of the studied case. At the same time, experimental studies can prove to be troublesome, mostly because of the amount of possible setups, complex geometries of interest, numerous materials being used and cost. For that reason it is reasonable to study this phenomena using numerical methods. Having the advantage in speed and cost of performance, computational studies become a valuable tool. For evaporation and
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4

Petronio, Andrea. "Numerical Investigation of evaporation and condensation within a tub." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/5370.

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2009/2010<br>L'obiettivo principale del progetto di ricerca sviluppato nella presente tesi di dottorato è quello di comprendere meglio le problematiche riguardanti le prestazioni di asciugatura della lavastoviglie, con speciale riferimento alla modellazione dei fenomeni di evaporazione e condensazione che avvengono nella vasca. Tipicamente l'acqua per il risciacquo finale viene portata ad una temperatura di 70°C che scalda le stoviglie permettendo a queste di immagazzinare energia termica. La lavastoviglie si raffredda dall'esterno, cosicché la vasca risulta essere più fredda dei piatti po
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5

Rorai, Cecilia. "Vortex reconnection in superfluid helium." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7868.

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2010/2011<br>La presente tesi concerne la modellizzazione e simulazione numerica, attraverso l'equazione di Gross-Pitaevskii (chiamata anche equazione di Schroedinger non lineare), della dinamica dei vortici quantistici nell'elio superfluido e in particolare del fenomeno della riconnessione. La riconnessione si verifica qualora due vortici approssimativamente antiparalleli, si intersecano e si scambiano le estremità. Questo fenomeno è stato osservato sperimentalmente e risulta essere una caratteristica essenziale della turbolenza quantistica.<br>XXIII Ciclo<br>1983
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6

Pivetta, Marco. "Phase space analysis applied to geophysical fluids and thermoelasticity." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8660.

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2011/2012<br>In questo lavoro l'analisi dello spazio delle fasi viene applicata a tre sistemi di equazioni differenziali, due riguardanti i fluidi geofisici e uno riguardante le onde termoelastiche. Il primo risultato mostra l'esistenza e l'unicità di soluzioni "mild" per l'equazione di Navier-Stokes-Coriolis, nel caso i dati iniziali siano piccoli nella norma dello spazio ibrido $B_{\dot{H}^{\frac{1}{2}},\dot{B}^{\frac{3}{p}-1}_{p,\infty}}$, con $3<p<4$. La dimostrazione si basa su un teorema di punto fisso, che deriva dal teorema delle contrazioni. Il secondo teorema mostra l'esistenza di so
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7

Balog, Irena. "Analysis of fluid-mechanical efficiency of offshore wind turbines from regional to local scale." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11101.

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2013/2014<br>Renewable energy resources, such as wind, are available worldwide. Locating areas with high and continual wind sources are crucial in pre-planning of wind farms. Vast offshore areas are characterized with higher and more reliable wind resources in comparison with continental areas. However, offshore wind energy production is in a quite preliminary phase. Elaborating the potential productivity of wind farms over such areas is challenging due to sparse in situ observations. Mediterranean basin is not an exception. The overall aim of this thesis is to perform analysis in model effici
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8

Foroozani, Najmeh. "Numerical Study of Turbulent Rayleigh-Benard Convection with Cubic confinement." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11115.

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2012/2013<br>Turbulent Rayleigh-Bénard convection (RBC) occurs when a shallow layer of fluid is heated from below. It is a challenging subject in non-linear physics, with many important applications in natural and engineering systems. Because of the complexity of the governing equations, analytical progress in understanding convection has been slow, and laboratory experiments and numerical simulations have assumed increased importance. In regard to numerical work, Large-Eddy Simulation (LES) techniques have proved to be reliable and powerful tool to understand the physics since it provides
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9

Zanier, Giulia. "High Resolution Model to Predict Oil Spill Dispersion in Harbour and Coastal Areas." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11124.

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2013/2014<br>Mostriamo un modello allo stato dell’arte, che considera i principali processi fisici che governano il greggio in mare nelle prime ore dopo il rilascio, (Zanier, et al., 2014). Le particelle e i tar sono trattati come particelle lagrangiane, ognuna con la propria densità e il proprio diametro; consideriamo le forze principali che agiscono su di esse ossia: galleggiamento, trascinamento e la forza di Coriolis. Il greggio in forma di film sottile è modellato tramite le equazioni proposte da Nihoul (Nihoul 1983/84). Il modello originale di Nihoul considera le forze principali (ossia
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10

Fakhari, Ahmad. "Wall-Layer Modelling of massive separation in Large Eddy Simulation of coastal flows." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11104.

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2012/2013<br>The subject of modelling flow near wall is still open in turbulent wall bounded flows, since there is no wall layer model which works perfectly. Most of the present models work well in attached flows, specially for very simple geometries like plane channel flows. Weakness of the models appears in complex geometries, and many of them do not capture flow separation accurately in detached flows, specially when the slope of wall changes gradually. In many engineering applications, we deal with complex geometries. A possible way to simulate flows influenced by complex geometr
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11

Berta, Maristella. "Surface transport in the Northeastern Adriatic Sea from Finite-Size Lyapunov Exponents." Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7762.

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2010/2011<br>The surface transport in the Northeastern Adriatic Sea has been investigated by evaluating, for the first time, the Finite-Size Lyapunov Exponent (FSLE) on the current field detected by the High Frequency (HF) coastal radar network active in the period August 2007 - August 2008. A similar analysis has been carried out on the MITgcm (Massachusetts Institute of Technology general circulation model) current field in order to have a perspective on the various results given by the application of the same FSLE evaluation procedure to different velocity fields. This work includes also th
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12

Rivetti, Sabrina. "Bounded variation solutions of capillarity-type equations." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/10161.

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2012/2013<br>We investigate by different techniques, the solvability of a class of capillarity-type problems, in a bounded N-dimensional domain. Since our approach is variational, the natural context where this problem has to be settled is the space of bounded variation functions. Solutions of our equation are defined as subcritical points of the associated action functional.<br>We first introduce a lower and upper solution method in the space of bounded variation functions. We prove the existence of solutions in the case where the lower solution is smaller than the upper solution. A solutio
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13

Nogherotto, Rita. "A numerical framework for multiple phase cloud microphysics in regional and global atmospheric models." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11140.

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2012/2013<br>The Regional Climate Model RegCM4 (Giorgi et al., 2012) treats nonconvective clouds and precipitation following the Subgrid Explicit SUBEX param- eterization (Pal et al., 2000). This scheme includes a simple representation for the formation of raindrops and solves diagnostically the precipitation: rain forms when the cloud water content exceeds the autoconversion threshold, that is an increasing function of the temperature and assumes different values over the land and over the ocean to account for the difference in number of the cloud condensation nuclei over continental and ocea
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14

Galea, Anthony. "Large-Eddy Simulation for wind and tidally driven sea circulation in coastal semi-closed areas." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/10160.

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2012/2013<br>A novel high-resolution, eddy-resolving numerical model (LES-COAST) is used to investigate currents, mixing and water renewal in Barcelona harbour and Taranto bay. These environmental sites are of particular importance due to the interplay between touristic and commercial activities, requiring detailed and high-definition studies of water quality within the harbour. We use Large Eddy Simulation (LES) which directly resolves the anisotropic and energetic large scales of motion and parametrizes the small, dissipative, ones. Small-scale turbulence is modelled by the Anisotropic Smago
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15

Corsato, Chiara. "Mathematical analysis of some differential models involving the Euclidean or the Minkowski mean curvature operator." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11127.

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2013/2014<br>Questa tesi è dedicata allo studio di alcuni modelli differenziali che nascono nell'ambito della fluidodinamica o della relatività generale e che coinvolgono gli operatori di curvatura media nello spazio $N$-dimensionale euclideo o di Minkowski. Entrambi sono operatori ellittici quasi-lineari che non soddisfano la proprietà di uniforme ellitticità, essendo l'operatore di curvatura media euclidea degenere, mentre quello di curvatura media nello spazio di Minkowski singolare. Il lavoro è suddiviso in tre parti. La prima riguarda lo studio delle soluzioni periodiche dell'equazion
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16

Siena, Martina. "Caratterizzazione della permeabilità in mezzi porosi sintetici e naturali." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8661.

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2011/2012<br>La presente tesi ha come principale obiettivo lo studio della variabilità di proprietà idrologiche in mezzi porosi, con particolare attenzione alla permeabilità. A tal fine, ci si avvale di un approccio che combina l'analisi di proprietà statistiche e di scaling applicata a dataset di permeabilità, con lo studio di risultati numerici di simulazioni di flusso alla microscala in mezzi porosi. Con la prima analisi è possibile caratterizzare variazioni di permeabilità alla scala di misura (tipicamente dell'ordine del centimetro), mentre la seconda analisi dà una descrizione dell'etero
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17

Reale, Marco. "A process study of the Adriatic-Ionian System baroclinic dynamics." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11106.

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2013/2014<br>Il sistema Adriatico Ionio è un importante componente nella circolazione termoalina del bacino orientale mediterraneo. Il mar Adriatico è la più importante sorgente di acqua profonde per il bacino. Il mar Ionio è una sorta di punto di incrocio per acque con caratteristiche diverse : le acque atlantiche in superficie , quelle levantine negli strati intermedi , le acque profonde adriatiche in quelli sul fondo . La variabilità osservata nella circolazione Ionica , con reversal periodici da stato ciclonico a stato anticiclonico e e viceversa, negli ultimi 20 anni è stata oggetto di
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