Now showing items 1-10 of 10

  • Advances in the particle finite element method (PFEM) for solving coupled problems in engineering 

    Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Celigueta Jordana, Miguel Ángel; Rossi, Riccardo; Martí, Julio Marcelo; Carbonell Puigbó, Josep Maria; Ryzhakov, Pavel; Suárez Arroyo, Benjamín (Springer, 2011)
    Part of book or chapter of book
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    We present some developments in the formulation of the Particle Finite Element Method (PFEM) for analysis of complex coupled problems on fluid and solid mechanics in engineering accounting for fluid-structure interaction ...
  • A fast and accurate method to solve the incompressible Navier-Stokes equations 

    Idelsohn Barg, Sergio Rodolfo; Nigro, Norberto; Gimenez, Juan; Rossi, Riccardo; Martí, Julio Marcelo (2013-02)
    Article
    Restricted access - publisher's policy
    Purpose: The purpose of this paper is to highlight the possibilities of a novel Lagrangian formulation in dealing with the solution of the incompressible Navier-Stokes equations with very large time steps. Design/meth ...
  • A finite element model for the simulation of the UL-94 burning test 

    Martí, Julio Marcelo; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (2018-11)
    Article
    Open Access
    The tendency of the polymers to melt and drip when they are exposed to external heat source play a very important role in the ignition and the spread of fire. Numerical simulation is a promising methodology for predicting ...
  • An explicit–implicit finite element model for the numerical solution of incompressible Navier–Stokes equations on moving grids 

    Martí, Julio Marcelo; Ryzhakov, Pavel (2019-06)
    Article
    Restricted access - publisher's policy
    In this paper an efficient mesh-moving Finite Element model for the simulation of the incompressible flow problems is proposed. The model is based on a combination of the explicit multi-step scheme (Runge–Kutta) with an ...
  • An explicit/implicit Runge–Kutta-based PFEM model for the simulation of thermally coupled incompressible flows 

    Martí, Julio Marcelo; Ryzhakov, Pavel (Springer, 2020-01)
    Article
    Open Access
    A semi-explicit Lagrangian scheme for the simulation of thermally coupled incompressible flow problems is presented. The model relies on combining an explicit multi-step solver for the momentum equation with an implicit ...
  • An improved enrichment method for weak discontinuities for thermal problems 

    Martí, Julio Marcelo; Ortega, Ernesto; Idelsohn Barg, Sergio Rodolfo (2017-07)
    Article
    Restricted access - publisher's policy
    The purpose of this paper is to propose a new elemental enrichment technique to improve the accuracy of the simulations of thermal problems containing weak discontinuities. Design/methodology/approach - The enrichment is ...
  • A semi-explicit multi-step method for solving incompressible navier-stokes equations 

    Ryzhakov, Pavel; Martí, Julio Marcelo (Multidisciplinary Digital Publishing Institute, 2018-01)
    Article
    Open Access
    The fractional step method is a technique that results in a computationally-efficient implementation of Navier–Stokes solvers. In the finite element-based models, it is often applied in conjunction with implicit time ...
  • Elemental enriched spaces for the treatment of weak and strong discontinuous fields 

    Idelsohn Barg, Sergio Rodolfo; Gimenez, Juan Marcelo; Martí, Julio Marcelo; Nigro, Norberto (2017-01)
    Article
    Open Access
    This paper presents a finite element that incorporates weak, strong and both weak plus strong discontinuities with linear interpolations of the unknown jumps for the modeling of internal interfaces. The new enriched space ...
  • Fast fluid–structure interaction simulations using a displacement-based finite element model equipped with an explicit streamline integration prediction 

    Ryzhakov, Pavel; Martí, Julio Marcelo; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (2017-03)
    Article
    Open Access
    We propose here a displacement-based updated Lagrangian fluid model developed to facilitate a monolithic coupling with a wide range of structural elements described in terms of displacements. The novelty of the model ...
  • 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)
    Part of book or chapter of book
    Restricted access - publisher's policy
    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) ...