Now showing items 1-20 of 24

    • Análisis numérico de las funciones corriente circulación y vorticidad, para flujo rotatorio con frontera rígida 

      Lizardi Ramos, A.; López C., R.; Morales G., J.R.; Terrés P., H.; Lara V., A. (Universitat Politècnica de Catalunya. CIMNE, 2010)
      Article
      Open Access
      En este trabajo se obtienen y analizan los campos de las funciones vorticidad tangencial, circulación y corriente meridional, que se generan en el interior de un cilindro cerrado que tiene el fondo giratorio y la tapa ...
    • Enviromental patterns and intermittent cascades 

      Redondo Apraiz, José Manuel; Carrillo Cortés, José Alejandro; Díez Rilova, Margarita; Jorge Sánchez, Juan; Sekula, Emil (2017)
      Conference report
      Open Access
      Real environmental flows are non-homogeneous, of fundamental interest is to determine and quantify turbulent diffusion from the available conditions of the flow, because the role of buoyancy and rotation modify the flow ...
    • Estudio de la calle de von Kármán en un cilindro mediante PIV 

      Sibera Quilez, Gemma (Universitat Politècnica de Catalunya, 2013-09)
      Master thesis (pre-Bologna period)
      Open Access
      Estudio del caso bidimensional de un cilindro inmerso en una corriente uniforme mediante la técnica experimental de medición y caracterización de flujos PIV con el propósito de obtener una visualización precisa de la ...
    • Estudio para el desarrollo y aplicación de técnicas de vorticidad a problemas de separación de flujo en perfiles 

      Somoza Pérez, Gonzalo (Universitat Politècnica de Catalunya, 2016-01-20)
      Bachelor thesis
      Open Access
      En el presente trabajo se desarrolla un modelo basado en los denominados “vortex methods” para su aplicación a problemas bidimensionales (perfiles alares) que impliquen separación de flujo. Ello permite superar las ...
    • Experimental study of the vortex generated in a bass-reflex port of a loudspeaker 

      Pallejà Cabré, Sergi (Universitat Politècnica de Catalunya, 2015-06-12)
      Bachelor thesis
      Restricted access - author's decision
      A bass-reflex port is an open pipe that connect the volume of the loudspeaker with the surrounding environment. Its role is to accentuate the low frequency range of sound. For some geometries a vortex shedding can be ...
    • Implementación de un correlador 2D para el cálculo automático de velocidades de nubes en imágenes planetarias 

      Torre Pernas, Sabela de la (Universitat Politècnica de Catalunya, 2011-01-24)
      Master thesis (pre-Bologna period)
      Open Access
      Implementación de una aplicación que, a partir de dos imágenes de la superfície de un planeta gigante (Júpiter, Saturno, Neptuno, Urano) separadas por cierto intervalo de tiempo, calcula automáticamente el desplazamiento ...
    • Jupiter’s Great Red Spot: strong interactions with incoming anticyclones in 2019 

      Sanchez Lavega, Agustin; Anguiano Arteaga, A; Iñurrigarro, Peio; García Melendo, Enrique José; Legarreta, Jon J.; Hueso, Ricardo; Sanz Requena, Jose Francisco; Perez Hoyos, Santiago; Mendikoa, Iñigo; Soria Guerrero, Manel; Rojas, Jose Félix; Andrés Carcasona, Marc; Prat Gasull, Arnau; Ordoñez Etxebarria, I; Rogers, John H; Foster, Clyde; Mizumoto, S; Casely, A; Hansen, C. J.; Orton, Glenn S.; Momary, T; Eichstädt, Gerald (Wiley, 2021-04)
      Article
      Open Access
      Jupiter’s Great Red Spot (GRS), a giant anticyclone, is the largest and longest-lived of all the vortices observed in planetary atmospheres. During its history, the GRS has shrunk to half its size since 1879, and encountered ...
    • Large-eddy simulation of cavitating tip leakage vortex structures and dynamics around a NACA0009 hydrofoil 

      Geng, Linlin; Zhang, Desheng; Chen, Jian; Escaler Puigoriol, Francesc Xavier (MDPI, 2021-11-01)
      Article
      Open Access
      The tip leakage vortex (TLV) has aroused great concern for turbomachine performance, stability and noise generation as well as cavitation erosion. To better understand structures and dynamics of the TLV, large-eddy simulation ...
    • Large-eddy simulations of the vortex-induced vibration of a low mass ratio two-degree-of-freedom circular cylinder at subcritical Reynolds numbers 

      Pastrana Maldonado, Daniel; Cajas García, Juan Carlos; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Houzeaux, Guillaume (Elsevier, 2018-09)
      Article
      Open Access
      The vortex induced vibration phenomenon of a low mass ratio () two-degree-of-freedom circular cylinder at subcritical Reynolds numbers ( 5300, 11,000) has been investigated by means of large-eddy simulations. A low-dissipative ...
    • Mixing in convective thermal fluxes in unsteady nonhomogeneous flows generating complex three dimensional vorticity patterns 

      Redondo Apraiz, José Manuel; Tellez Alvarez, Jackson David; Sanchez, Jesus M.; Lopez Gonzalez-Nieto, Pilar (2016)
      Conference report
      Open Access
      Diffusion and scaling of the velocity and vorticity in a thermoelectric driven heating and cooling experimental device is presented in order to map the different patterns and transitions between two and three dimensional ...
    • Numerical study of flow past circular cylinder in sub-critial range 

      Manresa Pérez, Francesc (Universitat Politècnica de Catalunya, 2014-02)
      Master thesis (pre-Bologna period)
      Open Access
      The present work discusses the validity of the 2D circular cylinder problem in sub-critical range solved with URANS approach. Fluent is used as the numerical software and results are compared in the context of previous ...
    • Numerical study of the vortex generated in a bass-reflex port of a loudspeaker 

      García Alcaide, Victor Manuel (Universitat Politècnica de Catalunya, 2015-06)
      Bachelor thesis
      Restricted access - author's decision
      A bass-reflex port is an open pipe that connect the volume of the loudspeaker with the surrounding environment. Its role is to accentuate the low frequency range of sound. For some geometries a vortex shedding can be ...
    • On the wake transition in the flow past a circular cylinder at critical Reynolds numbers 

      Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Chiva Segura, Jorge; Borrell Pol, Ricard; Oliva Llena, Asensio (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
      Conference report
      Open Access
    • Preliminary study of the effects of vortex generators in ultralight aircraft 

      López Calle, Oriol (Universitat Politècnica de Catalunya, 2015-06)
      Bachelor thesis
      Open Access
      - Theoretical study and state of the art of use of these devices. - Flow simulation across a given lifting surface with and without VGs. - Analysis of vortex generator’s performance in different configurations for given ...
    • Simulation of vortices induced by dielectric barrier discharge plasma actuator under burst-mode actuation 

      Fradera i Soler, Pau (Universitat Politècnica de Catalunya, 2020-07-20)
      Bachelor thesis
      Open Access
      Covenantee:   University of California, Irvine
      The Dielectric Barrier Discharge (DBD) plasma actuator operating under duty-cycle actuation has been shown to provide with great flow control capabilities. As a consequence, there is a pressing need to understand the ...
    • Spectral/hp element stability analysis of classical and non-classical streamwise aligned vortices 

      Melé Casas, Josep (Universitat Politècnica de Catalunya / Imperial College London, 2013)
      Bachelor thesis
      Restricted access - author's decision
      Covenantee:   Imperial College of London
      The goal of this thesis is to study the stability of a vortex, which has been called the m-Shape vortex, that takes place in some Formula 1 cars. This vortex has been obtained from Computational Fluid Dynamics data. It ...
    • Spiraling vortices in exciton-polariton condensates 

      Ma, Xuekai; Kartashov, Yaroslav V.; Gao, Tingge; Torner Sabata, Lluís; Schumacher, Stefan (American Physical Society (APS), 2020-07-23)
      Article
      Open Access
      We introduce the phenomenon of spiraling vortices in driven-dissipative (nonequilibrium) exciton-polariton condensates excited by a nonresonant pump beam. At suitable low pump intensities, these vortices are shown to spiral ...
    • Study for the numerical resolution of conservation equations of mass, momentum and energy to be applied to be applied on vortex 

      Vega Valeri, Albert (Universitat Politècnica de Catalunya, 2015-06)
      Bachelor thesis
      Restricted access - author's decision
      The main aim of this work is to be an introduction to the development of numerical codes for fluid dynamics and make them capable of represent real situations with academic purposes. Starting from a very basic point, the ...
    • Study of the passive flow control mechanism applied to a generic (DrivAer) car 

      González Viera, Rubén (Universitat Politècnica de Catalunya, 2021-01-17)
      Bachelor thesis
      Open Access
      From this last ten years on, the last trend of the automotive industry has been to produce daily driver cars as efficient as possible. This decision has permitted aerodynamic performance to be one of the most important ...
    • Superfluid vortex dynamics on a torus and other toroidal surfaces of revolution 

      Guenther, Nils Eric; Massignan, Pietro Alberto; Fetter, Alexander L. (American Physical Society (APS), 2020-05-04)
      Article
      Open Access
      The superfluid flow velocity is proportional to the gradient of the phase of the superfluid order parameter, leading to the quantization of circulation around a vortex core. In this work, we study the dynamics of a ...