Exploració per tema "Dinàmica de fluids computacional"

Ara es mostren els items 21-40 de 407

    • A numerical study on turbulent flow in an Inertial Particle Separator device 

      Bahramian, Linda; Amani, Ahmad; Rigola Serrano, Joaquim; Oliet Casasayas, Carles; Pérez Segarra, Carlos David (2023)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      An Inertia Particle Separator (IPS) is a device situated in the intake of the aircraft to remove particles from entering the engine; consisting of two types of outlets: core and scavenge. This work presents the numerical ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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
      Accés obert
      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, Andrei; Alsalti Baldellou, Àdel; Trias Miquel, Francesc Xavier (2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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
      Accés obert
      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 simplified new multigrid algorithm of lattice Boltzmann method for steady states 

      An, Bo; Bergadà Granyó, Josep Maria; Sang, W.M (2023-02-01)
      Article
      Accés restringit per política de l'editorial
      In the present paper, a new strategy of multigrid method is introduced to accelerate the convergence speed of numerical simulations via lattice Boltzmann method. Based on the popular V-cycle multigrid algorithm, a simplified ...

    • 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
      Accés obert
      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 Unified arbitrary lagrangian-eulerian model for fluid-structure interaction problems involving flows in flexible channels 

      Ryzhakov, Pavel; Martí, Julio Marcelo; Dialamishabankareh, Narges (2022)
      Article
      Accés obert
      In this work a finite element-based model for analyzing incompressible flows in flexible channels is presented. The model treats the fluid-solid interaction problem in a monolithic way, where the governing equations for ...

    • 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
      Accés obert
      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)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      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 for three-dimensional cylinders through deep reinforcement learning 

      Suárez Morales, Pol; Alcántara Ávila, Francisco; Miró Jané, Arnau; Rabault, Jean; Font García, Bernat; Lehmkuhl Barba, Oriol; Vinuesa Moltiva, Ricardo (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
      Text en actes de congrés
      Accés obert
      This paper presents for the first time successful results of active flow control with multiple independently controlled zero-net-mass-flux synthetic jets. The jets are placed on a three-dimensional cylinder along its span ...

    • Active flow control in aerodynamic applications. 

      Gil Aiguasenosa, Pol (Universitat Politècnica de Catalunya, 2020-04)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      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 of the boundary layer on an airfoil: a numerical study 

      Grande Silva, Albert (Universitat Politècnica de Catalunya, 2021-01)
      Treball Final de Grau
      Accés obert
      En aquest projecte es duu a terme un estudi per comprovar l’efecte de la utilització de control de flux actiu sobre el rendiment d’un perfil aerodinàmic utilitzant el software OpenFOAM. Per fer-ho, primerament s’elabora ...

    • Active flow control on SD7003 airfoil using synthetic jets 

      Tousi, Navid Monshi; Bergadà Granyó, Josep Maria; Rodríguez Pérez, Ivette María (2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      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)
      Treball Final de Grau
      Accés restringit per decisió de l'autor

    • 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
      Accés obert
      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 ...

    • Advanced modeling techniques for the simulation of turbulent flows 

      Plana Riu, Josep (2023-05-17)
      Comunicació de congrés
      Accés obert

    • Advanced numerical methods for shallow water simulations 

      Rahman Rahman, Shadman (Universitat Politècnica de Catalunya, 2023-07-18)
      Treball Final de Grau
      Accés obert
      This project is about the usage of Runge Kutta methods in Shallow Water simulations. This is not widely used in any case as other methods such as Euler or Adam Bashforth. Runge Kutta is a predictive method that is believed ...

    • Advanced study for the numerical resolution of the navier-stokes equations using the fractional step method 

      Queralt McBride, Andreu (Universitat Politècnica de Catalunya, 2022-10-21)
      Projecte Final de Màster Oficial
      Accés obert
      Different aspects related to Computational Fluid Dynamics (CDF) will be studied. First, theoretical aspects needed for the resolution of this kind of problems with the finite element method are reviewed. Then, the heat ...