Exploració per autor "Idelsohn Barg, Sergio Rodolfo"

Ara es mostren els items 43-62 de 81

    • Incompressible Lagrangian fluid flow with thermal coupling 

      Aubry, Romain; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (International Centre for Numerical Methods in Engineering (CIMNE), 2007)
      Llibre
      Accés obert
      In this monograph is presented a method for the solution of an incompressible viscous fluid flow with heat transfer and solidification usin a fully Lagrangian description on the motion. The originality of this method ...

    • Interaction between an elastic structure and free-surface flows: experimental versus numerical comparisons using the PFEM 

      Idelsohn Barg, Sergio Rodolfo; Marti, J.; Souto Iglesias, Antonio; Oñate Ibáñez de Navarra, Eugenio (2008-12)
      Article
      Accés obert
      The paper aims to introduce new fluid–structure interaction (FSI) tests to compare experimental results with numerical ones. The examples have been chosen for a particular case for which experimental results are not much ...

    • Lagrangian FE methods for coupled problems in fluid mechanics 

      Ryzhakov, Pavel; Oñate Ibáñez de Navarra, Eugenio; Rossi, Riccardo; Idelsohn Barg, Sergio Rodolfo (International Centre for Numerical Methods in Engineering (CIMNE), 2010)
      Llibre
      Accés obert
      This work aims at developing formulations and algorithms where maximum advantage of using Lagrangian finite element fluid formulations can be taken. In particular we concentrate our attention at fluid-structure interaction ...

    • Lagrangian particle-based simulation of waves: a comparison of SPH and PFEM approaches 

      Salis, Nicolò; Franci, Alessandro; Idelsohn Barg, Sergio Rodolfo; Reali, Alessandro; Manenti, Sauro (Springer, 2024-04)
      Article
      Accés obert
      Lagrangian numerical methods are particularly suitable to reproduce flows involving large and rapid deformation of the domain, fluid splitting and coalescence, jets and sprays. The absence of the convective terms in the ...

    • Lagrangian versus Eulerian integration errors 

      Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio; Nigro, Norberto; Becker, Pablo Agustín; Gimenez, Juan Marcelo (2015-08)
      Article
      Accés obert
      The possibility to use a Lagrangian frame to solve problems with large time-steps was successfully explored previously by the authors for the solution of homogeneous incompressible fluids and also for solving multi-fluid ...

    • Mejora de la solución fuertemente acoplada de problemas FSI mediante una aproximación de la matriz tangente de presión 

      Rossi, Riccardo; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio; Cotela Dalmau, Jordi; Del Pin, F. (Universitat Politècnica de Catalunya. CIMNE, 2011-01)
      Article
      Accés obert
      La interacción de los fluidos con las estructuras de su entorno es un desafío clásico para las técnicas numéricas. El objetivo de este trabajo es doble: en primer lugar se proporciona una explicación teórica simple de los ...

    • Melting and spread of polymers in fire with the particle finite element method 

      Oñate Ibáñez de Navarra, Eugenio; Rossi, Riccardo; Butler, Kathryn M.; Idelsohn Barg, Sergio Rodolfo (2009)
      Report de recerca
      Accés obert
      A new computational procedure for analysis of the melting and flame spread of polymers under fire conditions is presented. The method, termed Particle Finite Element Method (PFEM), combines concepts from particle-based ...

    • Meshless approximations and lagrangian formulation to solve free surface flows 

      Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio; Storti, M (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2000)
      Text en actes de congrés
      Accés obert
      A meshless method is presented for the solution of the incompressible fluid flow equation using a lagrangian formulation. The interpolated function are those used in the moving least square approximations and the time ...

    • Un método de paneles para el cálculo de la resistencia de ola en barcos 

      Storti, Mario; Elía, Jorge D'; Idelsohn Barg, Sergio Rodolfo (Centro Internacional de Métodos Numéricos en Ingeniería, 1997)
      Article
      Accés obert
      Presentamos un método de paneles para el cómputo linealizado del flujo potencial con una superficie libre, y el de la curva de resistencia de olas sobre un cuerpo con formas hidronavales en función del número de Fi-oude. ...

    • Migration of a generic multi-physics framework to HPC environments 

      Dadvand, Pooyan; Rossi, Riccardo; Gil, Marisa; Martorell Bofill, Xavier; Cotela Dalmau, Jordi; Juanpere, E.; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (Elsevier, 2013-07)
      Article
      Accés obert
      Creating a highly parallelizable code is a challenge specially for distributed memory machines (DMMs). Moreover, algorithms and data structures suitable for these platforms can be very different from the ones used in serial ...

    • Migration of a generic multi-physics framework to HPC environments 

      Dadvand, Pooyan; Rossi, Riccardo; Gil, Marisa; Martorell Bofill, Xavier; Cotela Dalmau, Jordi; Juanpere, E.; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (2011)
      Text en actes de congrés
      Accés obert
      Creating a highly parallelizable code is a challenge and development for distributed memory machines (DMMs) can be very different form developing a serial code in term of algorithms and structure. For this reason, many ...

    • Modeling of free surface flows with elastic bodies interactions 

      Souto-Iglesias, A.; Idelsohn Barg, Sergio Rodolfo; Martí, J.; Zamora-Rodríguez, R.; Oñate Ibáñez de Navarra, Eugenio (2008)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, a series of new fluid and structure interactions test cases with strong free surface effects are presented and computations of such flows with the Particle Finite Element Method (PFEM) (Idelsohn, Oiiate, ...

    • Modelización del flujo invíscido alrededor de la pala de un aerogenerador mediante el método de los paneles 

      Idelsohn Barg, Sergio Rodolfo; Prado, Ricardo A.; Storti, Mario (Centro Internacional de Métodos Numéricos en Ingeniería, 1998)
      Article
      Accés obert
      Se describe la formulación de un modelo computacional para determinar, bajo condiciones invíscidas, el flujo tridimensional alrededor de la pala de una turbina eólica de eje horizontal. Dicho modelo se basa en la representación ...

    • Multifluid flows with weak and strong discontinuous interfaces using an elemental enriched space 

      Idelsohn Barg, Sergio Rodolfo; Gimenez, Juan M.; Nigro, Norberto (2018-04)
      Article
      Accés obert
      In a previous paper, the authors presented an elemental enriched space to be used in a finite-element framework (EFEM) capable of reproducing kinks and jumps in an unknown function using a fixed mesh in which the jumps and ...

    • 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
      Accés restringit per política de l'editorial
      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 ...