Browsing by Contributor "Meseguer Serrano, Álvaro"
Now showing items 1-14 of 14
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Análisis de estabilidad Arnoldi de las ondas de Tollmien-Schlichting en fluidos viscosos
(Universitat Politècnica de Catalunya, 2017-07)
Bachelor thesis
Open AccessEn este trabajo se estudia la estabilidad de las ondas Tollmien-Schlichting, que aparecen como una primera fase de la inestabilidad del flujo de Poiseuille plano como paso de laminar a turbulento. Se calcula la curva de ... -
Arnoldi Stability Analysis of Modulated Tollmien-Schlichting Waves in Shear Flows
(Universitat Politècnica de Catalunya, 2015)
Coursework
Open AccessThe transition of strictly two-dimensional Poiseuille flow from one-frequency amplitude-modulated states to chaotic behaviour is studied through full numerical simulation of spatially periodic channels with large longitudinal ... -
Assessing the physics of models for transition in pipe flow
(Universitat Politècnica de Catalunya, 2022-07-06)
Bachelor thesis
Open Access
Covenantee: Universität Bremen / Zentrum für angewandte Raumfahrttechnologie und MikrogravitationTransition to turbulence in pipe flow is a long standing problem in the field of turbulence research. In the route to fully turbulent pipe flow, turbulence presents itself in a wide variety of forms. In recent years, a ... -
Characterization of localized solutions of plane Poiseuille flow in very long domains
(Universitat Politècnica de Catalunya, 2016-05-24)
Bachelor thesis
Open AccessThe aim of this Bachelor's Thesis is the study of a particular low-energy localized plane Poiseuille solution while minimizing the error introduced by the streamwise periodicity boundary condition. The fact that the ... -
Computació de fluxos preturbulents bidimensionals al problema de Poiseuille pla
(Universitat Politècnica de Catalunya, 2012-05-15)
Minor thesis
Open AccessLa inestabilitat dels fluxos i la transició a la turbulència són fenòmens estesos a l’enginyeria i el medi natural. El problema de Poiseuille és un dels escenaris típics en dinàmica de fluids on la transició de flux lamina ... -
Digital control of pre-turbulent flows in a Taylor-Couette device
(Universitat Politècnica de Catalunya, 2019-07-09)
Bachelor thesis
Open AccessTransition to turbulence is one of the oldest problems yet to be solved in physics and engineering. Certain fluid systems are known to undergo a laminar-turbulent transition through a deterministic route of laminar flows ... -
Dinàmica d'ions a la magnetosfera de la Terra
(Universitat Politècnica de Catalunya, 2020-07)
Bachelor thesis
Open AccessEn aquest treball s'explora el problema de Störmer. Aquest tracta de l'estudi de les trajectòries dels ions en influència del camp magnètic terrestre. S'ha dut a terme a partir de l'expressió del lagrangià de la partícula ... -
Exact coherent structures in the transitional regime of shear and centrifugal flows
(Universitat Politècnica de Catalunya, 2022-04-22)
Doctoral thesis
Open AccessTurbulence is one of the major concerns for most technological problems involving fluid motion. Specially in aeronautics, a turbulent boundary layer results in structural stresses, vibrations and higher aircraft drag, ... -
Large eddy simulation of the combustion in an oxygen-paraffin hybrid rocket engine
(Universitat Politècnica de Catalunya, 2019-06)
Bachelor thesis
Open Access
Covenantee: Zentrum für angewandte Raumfahrttechnologie und MikrogravitationEn la última década se ha despertado un renovado interés en los cohetes híbridos debido a su bajo precio, manejo seguro y compatibilidad con carburantes verdes. Un grupo de estudiantes está desarrollando un cohete híbrido ... -
Modelling the cardiovascular system: pulsating flow through a collapsible channel
(Universitat Politècnica de Catalunya, 2017-05)
Bachelor thesis
Open AccessThe interaction between fluid flows and the deformation of solid structures is important in many engineering applications, as in turbochargers, wind turbines or airplane wings. The flow of blood in the body is also an ... -
Non-linear fluid dynamics in oscillatory cylindrical cavities
(Universitat Politècnica de Catalunya, 2013-06-28)
Doctoral thesis
Open AccessEven though the transition to turbulence has been studied for over a century, its complete comprehension still remains unclear even for the simplest flows and continues to be a daunting challenge for the scientific community. ... -
Periodically forced extensional pipe flow
(Universitat Politècnica de Catalunya, 2020-07)
Bachelor thesis
Open AccessThis project studies the flow of a fluid inside an infinite pipe with periodically forced extensional walls in the axial direction. The Navier-Stokes equations for an incompressible fluid inside the pipe are solved to ... -
Study of the effect of viscosity in drop breakup in turbulent flow
(Universitat Politècnica de Catalunya, 2021-07-12)
Bachelor thesis
Open Access
Covenantee: Universität BremenThe systems formed by two immiscible liquids such as emulsions are of great interest in industrial processes, the emulsion formation process occurs depending on the phenomenon of the breakup of the drops of one of the ... -
Turbulence transition in pulsating pipe flow: shear-thinning effects
(Universitat Politècnica de Catalunya, 2021-07-12)
Bachelor thesis
Open Access
Covenantee: Universität BremenIn the last years the major cause of death worldwide has turned out to be because of cardiovascular diseases; for instance, owing to the presence of blood turbulence in our vessels. The problem has already been addressed ...