Now showing items 21-40 of 388

    • A Projected Ghost Fluid Method for a mimetic approach for extreme contrast interfaces in multiphase flows 

      Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier; Castro González, Jesús; Oliva Llena, Asensio (2018)
      Conference report
      Restricted access - publisher's policy
      In the context of a multimaterial domain, the GFM for the Laplacian operator is reformulated from an algebraic perspective, where operators are represented by matrices. From this perspective, a whole new level of analysis ...
    • A pseudo-DNS method for the simulation of incompressible fluid flows with instabilities at different scale 

      Idelsohn Barg, Sergio Rodolfo; Nigro, Norberto; Larreteguy, Axel; Gimenez, Juan Marcelo; Ryzhakov, Pavel (Springer, 2020-01)
      Article
      Open Access
      In this work, a new model for the analysis of incompressible fluid flows with massive instabilities at different scales is presented. It relies on resolving all the instabilities at all scales without any additional model, ...
    • A pure virtual approach for managing platform portability on hybrid supercomputers 

      Álvarez Farré, Xavier; Gorobets, Andrey; Alsati Baldellou, Àdel; Trias Miquel, Francesc Xavier (2019)
      Conference report
      Restricted access - publisher's policy
      Commonly, the development of scientific computing software follows a stencilbased approach: the numerical methods and algorithms are introduced into computing systems through stencil data structures and sweeps (i.e. ...
    • A review study on the modeling of high-temperature solar thermal collector systems 

      Hachicha, Ahmed A.; Yousef, Bashria A.A.; Said, Zafar; Rodríguez Pérez, Ivette María (2019-09-01)
      Article
      Restricted access - publisher's policy
      Concentrated solar power technologies are gaining more attention in the last two decades in order to replace the conventional power technologies and reduce their environmental impact. Among the developed concentrating ...
    • A time-average filtering technique to improve the efficiency of two-layer wall models for large eddy simulation in complex geometries 

      Calafell Sandiumenge, Joan; Trias Miquel, Francesc Xavier; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Elsevier, 2019-06-30)
      Article
      Restricted access - publisher's policy
      Two-Layer wall models have been recurrently studied since they represent a good physical model for Large Eddy Simulations with underresolved wall regions. Specifically, those based on the Reynolds Averaged Navier-Stokes ...
    • A-posteriori error estimation for the finite point method with applications to compressible flow 

      Ortega, Enrique; Flores Le Roux, Roberto Maurice; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2017-04)
      Article
      Open Access
      An a-posteriori error estimate with application to inviscid compressible flow problems is presented. The estimate is a surrogate measure of the discretization error, obtained from an approximation to the truncation terms ...
    • Active Aerodynamics applied on the Arcfox-GT Supercar 

      Gil Esteller, Enric (Universitat Politècnica de Catalunya, 2019-07-23)
      Bachelor thesis
      Restricted access - author's decision
      In this project an aerodynamic study is developed on a supercar, integrating different aerodynamic elements from the active aerodynamics. The model where this innovating technology is applied is the ArcFox-GT, a Chinese ...
    • Active flow control in aerodynamic applications. 

      Gil Aiguasenosa, Pol (Universitat Politècnica de Catalunya, 2020-04)
      Master thesis
      Restricted access - author's decision
      The focus of this thesis is to determine the e ect of Active Flow Control ( AFC from now), studying, analyzing the behavior of airfoil and afterwards, implementing AFC and evaluate its impact on aerodynamic performance. ...
    • Active flow control on SD7003 airfoil using synthetic jets 

      Tousi, Navid Monshi; Bergadà Granyó, Josep Maria; Rodríguez Pérez, Ivette María (2019)
      Conference report
      Restricted access - publisher's policy
      The present paper focuses on applying the Active Flow Control (AFC) technology on the Selig-Donovan 7003 (SD7003) airfoil at Reynolds number 60,000, the idea is to employ synthetic jets in order to modify the lift and drag ...
    • Active Flow Control Study Applied to a backwards facing inclined step II 

      Gibert Martínez, Isaac (Universitat Politècnica de Catalunya, 2018-06)
      Bachelor thesis
      Restricted access - author's decision
      La idea general de este estudio recae en la implementación de sistemas de control activo de flujo con la finalidad de mejorar las condiciones en las que este se desarrolla y beneficiar de alguna forma al tipo de producto ...
    • (Active Flow Control) AFC study on an airfoil 

      Calvo San Emeterio, Carlos (Universitat Politècnica de Catalunya, 2016-09)
      Bachelor thesis
      Restricted access - author's decision
    • Advanced methodology for wind resource assessment near hydroelectric dams in complex mountainous areas 

      Yang, Lin; Rojas Gregorio, José Ignacio; Villardi de Montlaur, Adeline de (2019-11-05)
      Article
      Restricted access - publisher's policy
      To increase renewable energy generation in some hydroelectric dams, a solution consisting in installing wind turbines close to dams is proposed. Indeed, dam surroundings are prone to benefit from wind speed-up effect, extra ...
    • Aerodynamic performance of the rear spoiler of a Formula Renault V3.5 2007 

      Pla Navarro, Roger (Universitat Politècnica de Catalunya, 2011-04-13)
      Bachelor thesis
      Restricted access - author's decision
      L’objectiu d’aquest projecte és simular el comportament de l’aleró posterior d’un cotxe de competició de les World Series by Renault 3.5 a mesura que es mou per l’aire. Per tant, s’estudiaran les diverses forces ...
    • Aerodynamic study of a ship sail including calculation of its shape 

      Amer Viñas, Max (Universitat Politècnica de Catalunya, 2020-06-30)
      Bachelor thesis
      Open Access
      This project consists on the calculation of the shape of a ship sail under the load of the wind in downwind conditions, as well as the aerodynamic study and calculation of aerodynamic forces and coefficients through CFD ...
    • Aerodynamic study of the NASA’s X-43A hypersonic aircraft 

      Navó, Alex; Bergadà Granyó, Josep Maria (Multidisciplinary Digital Publishing Institute, 2020-11-19)
      Article
      Open Access
      A 2D aerodynamic study of the NASA’s X-43A hypersonic aircraft is developed using two different approaches. The first one is analytical and based on the resolution of the oblique shock wave and Prandtl–Meyer expansion wave ...
    • Aerodynamic study of the wake effects on a Formula 1 car 

      Guerrero Lorente, Alex; Castilla López, Roberto (2020-10-05)
      Article
      Open Access
      The high complexity of current Formula One aerodynamics has raised the question of whether an urgent modification in the existing aerodynamic package is required. The present study is based on the evaluation and quantification ...
    • Aerodynamical study of a photovoltaic solar tracker 

      Gutiérrez Castillo, José Leonardo (Universitat Politècnica de Catalunya, 2016-04-29)
      Bachelor thesis
      Open Access
      State of the art. Literature review about CFD applied to solar panels. Analytic approach of the problem. Application of CFD analysis. Validation of the results. Discussion of the results. Improvements proposal.
    • Air distribution in street canyons: a CFD study 

      Galí i Gimeno, Jordi (Universitat Politècnica de Catalunya, 2019-06-10)
      Bachelor thesis
      Open Access
      Heat island effect and air quality are major issues in big cities and the shape ofthe street canyons is directly related with these problems. The only presence the buildings modifies the temperature in their surroundings ...
    • Algebraic implementation of a flux limiter for heterogeneous computing 

      Valle Marchante, Nicolás; Álvarez Farré, Xavier; Trias Miquel, Francesc Xavier; Castro González, Jesús; Oliva Llena, Asensio (2018)
      Conference report
      Restricted access - publisher's policy
    • An analysis of the aerodynamic performances of an ancient Spanish windmill 

      Sanchez Gil, Eva (Universitat Politècnica de Catalunya, 2014-07-11)
      Bachelor thesis
      Restricted access - author's decision
      The windmill generates power by extracting part of the kinetic energy of the wind, and it was aimed to satisfy the basic needs on XVIII and XIX century in Southern Spain. Wind power has been used as long as humans have put ...