Now showing items 21-32 of 32

    • Modelització 3D de la captació de flux per reixes transversals al carrer 

      Ros San Martin, Gerard (Universitat Politècnica de Catalunya, 2017-09)
      Master thesis
      Restricted access - author's decision
    • New differential operators and discretization methods for large-eddy simulation and regularization modeling 

      Trias Miquel, Francesc Xavier; Gorobets, Andrei; Pérez Segarra, Carlos David; Oliva Llena, Asensio (International Association for Computational Mechanics (IACM), 2014)
      Conference report
      Restricted access - publisher's policy
      Direct numerical simulations (DNS) of the incompressible Navier-Stokes equations are limited to relatively low-Reynolds numbers. Therefore, dynamically less complex mathematical formulations are necessary for coarse-grain ...
    • Numerical solutions for the fluid flow and the heat transfer of viscoplastic-type non-Newtonian fluids 

      Carmona Muñoz, Ángel; Pérez Segarra, Carlos David; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Université de Poitiers, 2012)
      Conference report
      Restricted access - publisher's policy
      The aim of this work is to provide numerical solutions for the fluid flow and the heat transfer generated in closed systems containing viscoplastic-type non-Newtonian fluids. A lid driven cavity (LDC) and a differentially ...
    • Numerical study of flow through a Savonius wind turbine 

      Martorell Pol, Pere Antoni (Universitat Politècnica de Catalunya, 2015-06-12)
      Bachelor thesis
      Open Access
      Due to its principle of operation and the continuous variation of flow angle with respect to blades, strong unsteady effects including separation and vortex shedding are observed in a Savonius wind turbine . The flow ...
    • On the CFD&HT of the flow around a parabolic trough solar collector under real working conditions 

      Amine Hachicha, Ahmed; Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (2013)
      Conference report
      Open Access
      Parabolic trough solar collector is currently one of the most mature and prominent solar applications for production of electricity. These systems are usually located in open terrain where strong winds may occur and affect ...
    • Parallel large eddy simulations of wind farms with the actuator line method 

      Baez Vidal, Aleix; Lehmkuhl Barba, Oriol; Martínez Valdivieso, Daniel; Pérez Segarra, Carlos David (Elsevier, 2013)
      Conference report
      Open Access
      Parallel Computation of wind farm Large Eddy Simulations (LES) requires the use of with Wind Turbine Models (WTM). CFD and WTM demand different domain decompositions as optimal CFD and WTM decompositions do not necessarily ...
    • 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 ...
    • Regularization modeling of wall-bounded turbulent flows 

      Trias Miquel, Francesc Xavier; Gorobets, Andrei; Verstappen, R.W.C.P.; Oliva Llena, Asensio (2010)
      Conference lecture
      Restricted access - publisher's policy
      Since direct numerical simulations cannot be computed at high Reynolds numbers, a dynamically less complex formulation is sought. In the quest for such a formulation, we consider regularizations of the convective term ...
    • Rotor spinning transfer channel design optimization via computational fluid dynamics 

      Huiting, Lin; Bergadà Granyó, Josep Maria; Yongchun, Zeng; Nicholus T, Akankwasa; Yuze, Zhang; Jun, Wang (2018-06-01)
      Article
      Open Access
      The conventional rotor spinning unit generates flow vortices in the transfer channel upstream region which affect the fiber configuration and consequently yarn properties. Geometry and spinning parameters such as transfer ...
    • Simulación mediante dinámica de fluidos computacional (CFD) de un intercambiador de flujo cruzado 

      Giraldo Vivas, Adrià (Universitat Politècnica de Catalunya, 2017-10)
      Bachelor thesis
      Open Access
      Con este trabajo se pretende simular lo que ocurre cuando un flujo de aire turbulento fluye a través de un intercambiador de calor de flujo cruzado, usando la mecánica de fluidos computacional (CFD). Inicialmente para ...
    • Study of alternative geometries for fluidic oscillators by means of computational fluid mechanics 

      Baucells Fuster, Xavier (Universitat Politècnica de Catalunya, 2015-06-12)
      Bachelor thesis
      Open Access
      1. Documentación y estudio del estado del arte. 2. Aprendizaje de los conceptos básicos de la Mecánica de Fluidos Computacional. 3. Aprendizaje de los programas ICEM CFD y ANSYS-FLUENT. 4. Selección de las geometrías y ...
    • Study of the fluid-structure interaction of Parc Vallparadis' foodbrige using computational methods 

      Ariza Beltran, Cristian (Universitat Politècnica de Catalunya, 2015-10-09)
      Bachelor thesis
      Open Access
      1)     Autoaprenentatge d’ANSYS mechanical i ANSYS-CFX guiat pel professor2)  Crear el model tridimensional utilitzant softwares de CAD3)  Definició dels casos d’estudi (estàtic, anàlisis modal) segons les accions i ...