Now showing items 1-10 of 10

    • Análisis de estabilidad Arnoldi de las ondas de Tollmien-Schlichting en fluidos viscosos 

      Montañez Fabrés, Raquel (Universitat Politècnica de Catalunya, 2017-07)
      Bachelor thesis
      Open Access
      En 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 

      Santigosa, Marc; Abril, Oriol (Universitat Politècnica de Catalunya, 2015)
      Coursework
      Open Access
      The 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 ...
    • Characterization of localized solutions of plane Poiseuille flow in very long domains 

      Valera Pascual, Antonio (Universitat Politècnica de Catalunya, 2016-05-24)
      Bachelor thesis
      Open Access
      The 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 

      Rota Cunill, Joan (Universitat Politècnica de Catalunya, 2012-05-15)
      Minor thesis
      Open Access
      La 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 

      Gil Bofill, Núria (Universitat Politècnica de Catalunya, 2019-07-09)
      Bachelor thesis
      Open Access
      Transition 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 

      Contreras Molina, Gerard (Universitat Politècnica de Catalunya, 2020-07)
      Bachelor thesis
      Open Access
      En 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 ...
    • Large eddy simulation of the combustion in an oxygen-paraffin hybrid rocket engine 

      Homs Pons, Carme (Universitat Politècnica de Catalunya, 2019-06)
      Bachelor thesis
      Open Access
      Covenantee:   Zentrum für angewandte Raumfahrt­technologie und Mikro­gravitation
      En 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 

      Cabanes Bosacoma, Xavier (Universitat Politècnica de Catalunya, 2017-05)
      Bachelor thesis
      Open Access
      The 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 

      Panadès i Guinart, Carles (Universitat Politècnica de Catalunya, 2013-06-28)
      Doctoral thesis
      Open Access
      Even 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 

      Bahí Buhígas, Roger (Universitat Politècnica de Catalunya, 2020-07)
      Bachelor thesis
      Open Access
      This 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 ...