Academic literature on the topic 'SCUOLA DI DOTTORATO DI ENVIRONMENTAL AND INDUSTRIAL FLUID MECHANICS'

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Dissertations / Theses on the topic "SCUOLA DI DOTTORATO DI ENVIRONMENTAL AND INDUSTRIAL FLUID MECHANICS"

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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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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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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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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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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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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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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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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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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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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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