Exploració per autor "Idelsohn Barg, Sergio Rodolfo"

Ara es mostren els items 57-76 de 81

    • Numerical simulation of multifluid flows with the particle finite element method 

      Mier Torrecilla, Mónica de; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (International Centre for Numerical Methods in Engineering (CIMNE), 2010)
      Llibre
      Accés obert
      In this monograph we have focused on understanding the basic physical principles of multi-fluid flows and the difficulties that arise in their numerical simulation. We have extended the Particle Finite Element Method to ...

    • Numerical simulations of negatively buoyant jets in an immiscible fluid using the Particle Finite Elemept Method 

      Mier Torrecilla, Mónica de; Geyer Traver, Adelina; Phillips, Jeremy C.; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (2012-06)
      Article
      Accés obert
      Negatively buoyant jets consist in a dense fluid injected vertically upward into a lighter ambient fluid. The numerical simulation of this kind of buoyancy-driven flows is challenging as it involves multiple fluids with ...

    • On the application of two-fluid flows solver to the casting problem 

      Kamran, Kazem; Rossi, Riccardo; Dadvand, Pooyan; Idelsohn Barg, Sergio Rodolfo (Springer, 2014)
      Capítol de llibre
      Accés restringit per política de l'editorial
      This book presents and discusses mathematical models, numerical methods and computational techniques used for solving coupled problems in science and engineering. It takes a step forward in the formulation and solution of ...

    • On the validation of the particle finite element method (PFEM) for complex engineering fluid flow problems 

      Larese De Tetto, Antonia; Rossi, Riccardo; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (TU Delft, 2006)
      Text en actes de congrés
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      Several comparisons between experiments and computational models are presented in the following pages. The objective is to verify the ability of Particle Finite Elements Methods (PFEM) [1] [2] to reproduce hydraulic phenomena ...

    • Parallel adaptive mesh refinement for incompressible flow problems 

      Rossi, Riccardo; Cotela Dalmau, Jordi; Lafontaine, Nelson Maireni; Dadvand, Pooyan; Idelsohn Barg, Sergio Rodolfo (Elsevier, 2013-07)
      Article
      Accés obert
      The present article describes a simple element-driven strategy for the conforming refinement of simplicial finite element meshes in a distributed environment. The proposed algorithm is effective both for local adaptive ...

    • Parallel adaptive mesh refinement for incompressible flow problems 

      Cotela Dalmau, Jordi; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio; Lafontaine, Nelson Maireni; Idelsohn Barg, Sergio Rodolfo (2011)
      Text en actes de congrés
      Accés obert
      We present an algorithm for the solution of the incompressible Navier- Stokes equations combined with local refinement of the mesh based on an error estimation. Our solution strategy is based on well-established CFD ...

    • Petrov-Galerkin methods for the transient advective-diffusive equation with sharp gradients 

      Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (1994-05)
      Report de recerca
      Accés obert
      A Petrov–Galerkin formulation based on two different perturbations to the weighting functions is presented. These perturbations stabilize the oscillations that are normally exhibited by the numerical solution of the transient ...

    • Possibilities of the particle finite element method in computational mechanics 

      Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Celigueta Jordana, Miguel Ángel; Rossi, Riccardo; Latorre, Salvador (2010)
      Report de recerca
      Accés obert
      We present some developments in the formulation of the Particle Finite Element Method (PFEM) for analysis of complex coupled problems in fluid and solid mechanics accounting for fluid-structure interaction and coupled ...

    • Reduced order models for thermally coupled low Mach flows 

      Reyes, Ricardo; Codina, Ramon; Baiges Aznar, Joan; Idelsohn Barg, Sergio Rodolfo (Springer, 2018-12)
      Article
      Accés obert
      In this paper we present a collection of techniques used to formulate a projection-based reduced order model (ROM) for zero Mach limit thermally coupled Navier–Stokes equations. The formulation derives from a standard ...

    • Reduced-order subscales for POD models 

      Baiges Aznar, Joan; Codina, Ramon; Idelsohn Barg, Sergio Rodolfo (2015-07-01)
      Article
      Accés obert
      In this work the Reduced-Order Subscales for Proper Orthogonal Decomposition models are presented. The basic idea consists in splitting the full-order solution into the part which can be captured by the reduced-order model ...

    • Refinamiento adaptativo sobre SUPG. Un elemento de interfase 

      Nigro, Norberto; Idelsohn Barg, Sergio Rodolfo (Centro Internacional de Métodos Numéricos en Ingeniería, 1992)
      Article
      Accés obert
      En este trabajo presentamos una nueva forma de implementar la técnica SUPG usando una estrategia de refinamiento adaptativo. Nos hemos abocado al tratamiento de los nodos irregulares sobre mallas no uniformes. Presentamos ...

    • Safety analysis of rockfill dams during overspill phenomena 

      Larese De Tetto, Antonia; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (Bulgarian Committee on Large Dams, 2008)
      Text en actes de congrés
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      An increasing interest is rising on the study of rockfill embankment dams during overspilling. Design criteria of earth dams are being reviewed in many countries to guarantee an increasing safety level in front of an ...

    • Ship hydrodynamics 

      Oñate Ibáñez de Navarra, Eugenio; García Espinosa, Julio; Idelsohn Barg, Sergio Rodolfo (2003-03)
      Report de recerca
      Accés obert
      This chapter presents an overview of some computational methods for analysis of ship hydrodynamics problems. Attention is focused on the description of a stabilized finite element formulation derived via a finite calculus ...

    • Simulating complex problems in civil engineering: the particle finite element method and beyond 

      Rossi, Riccardo; Larese De Tetto, Antonia; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial

    • Solución numérica del problema de transmisión de calor con cambio de fase 

      Crivelli, Luis A.; Idelsohn Barg, Sergio Rodolfo (1985)
      Article
      Accés obert
      Este trabajo resume el estado del arte de la solución numérica de los problemas de transmisión de calor con cambio de fase. Su objetivo consiste en presentar algoritmos en función de su capacidad de encarar problemas ...

    • Surface tension problems solved with the particle finite element method using large time-steps 

      Gimenez, Juan M.; Nigro, Norberto; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (Elsevier, 2016-12)
      Article
      Accés obert
      In previous works [S. R. Idelsohn, J. Marti, P. Becker, E. Oñate, Analysis of multifluid flows with large time steps using the particle finite element method, International Journal for Numerical Methods in Fluids 75 (9) ...

    • The Particle Finite Element Method (PFEM): an effective numerical technique for solving coastal engineering problems 

      Oñate Ibáñez de Navarra, Eugenio; Celigueta Jordana, Miguel Ángel; Idelsohn Barg, Sergio Rodolfo (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We present some developments in the Particle Finite Element Method (PFEM) for the solution of complex coupled problems in coastal engineering involving fluid-soil-structure interaction (FSSI) such as the stability of ...

    • The particle finite element method (PFEM): an effective numerical technique for solving marine, naval and harbour engineering problems 

      Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Celigueta Jordana, Miguel Ángel; Suárez Arroyo, Benjamín (Springer, 2013-05-02)
      Capítol de llibre
      Accés restringit per política de l'editorial
      We present some developments in the Particle Finite Element Method (PFEM) for the solution of complex coupled problems in marine, naval and harbour engineering involving fluid-soil-structure interaction (FSSI). The PFEM ...

    • The particle finite element method for multi-fluid flows 

      Idelsohn Barg, Sergio Rodolfo; Mier Torrecilla, Mónica de; Martí, Julio Marcelo; Oñate Ibáñez de Navarra, Eugenio (Springer, 2011)
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      This paper presents the Particle Finite Element Method (PFEM) and its application to multi-fluid flows. Key features of the method are the use of a Lagrangian description to model the motion of the fluid particles (nodes) ...

    • The particle finite element method: an effective numerical technique for solving fluid-soil-structure interaction problems 

      Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Celigueta Jordana, Miguel Ángel; Salazar, F.; Suárez Arroyo, Benjamín (Universidad Politécnica de Madrid (UPM), 2012)
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