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  The intrinsic time for the streamline upwind/Petrov-Galerkin formulation using quadratic elements 

  Codina, Ramon; Oñate Ibáñez de Navarra, Eugenio; Cervera Ruiz, Miguel (1992-01)
  Article
  Open Access

  In this paper the functions of the Péclet number that appear in the intrinsic time of the streamline upwind/Petrov-Galerkin (SUPG) formulation are analyzed for quadratic elements. Some related issues such as the computation ...
• Dynamic term-by-term stabilized finite element formulation using orthogonal subgrid-scales for the incompressible Navier–Stokes problem 

  Castillo, Ernesto; Codina, Ramon (2019-06)
  Article
  Restricted access - publisher's policy

  In this paper, we propose and analyze the stability and the dissipative structure of a new dynamic term-by-term stabilized finite element formulation for the Navier–Stokes problem that can be viewed as a variational ...
• On a general implementation of h- and p-adaptive curl-conforming finite elements 

  Olm Serra, Marc; Badia, Santiago; Martín Huertas, Alberto Francisco (2019-03)
  Article
  Restricted access - publisher's policy

  Edge (or Nédélec) finite elements are theoretically sound and widely used by the computational electromagnetics community. However, its implementation, especially for high order methods, is not trivial, since it involves ...
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  Aproximación de la ecuación escalar de convección-difusión-reacción con formulaciones estabilizadas de elementos finitos de alto orden 

  Villota Cadena, Ángel Patricio; Codina, Ramon (2019-02)
  Article
  Open Access

  En este artículo presentamos formulaciones estabilizadas de elementos finitos para resolver la ecuación de convección-difusión-reacción escalar en el caso de difusión pequeña. Por un lado, resumimos la aplicación de las ...
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  Reduced order models for thermally coupled low Mach flows 

  Reyes Sotomayor, Ricardo; Codina, Ramon; Baiges Aznar, Joan; Idelsohn Barg, Sergio Rodolfo (Springer, 2018-12)
  Article
  Open Access

  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 ...
• A dynamic spring element model for the prediction of longitudinal failure of polymer composites 

  Tavares, Rodrigo Paiva; Otero, Fermín; Baiges Aznar, Joan; Turon Travesa, Albert; Camanho, Pedro P. (2019-04)
  Article
  Restricted access - publisher's policy

  A spring element model that takes into account the dynamic effects associated with fibre failure in composite materials is presented. The model is implemented in a parallel environment to allow a better performance in the ...
• Computational aeroacoustics to identify sound sources in the generation of sibilant /s/ 

  Pont Ribas, Arnau; Guasch Fortuny, Oriol; Baiges Aznar, Joan; Codina, Ramon; van Hirtum, Annemie (John Wiley & sons, 2019-01)
  Article
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  A sibilant fricative /s/ is generated when the turbulent jet in the narrow channel between the tongue blade and the hard palate is deflected downwards through the space between the upper and lower incisors and then impinges ...
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  Mixed aggregated finite element methods for the unfitted discretization of the Stokes problem 

  Badia, Santiago; Martín Huertas, Alberto Francisco; Verdugo Rojano, Francesc (2018-12-18)
  Article
  Open Access

  In this work, we consider unfitted finite element methods for the numerical approximation of the Stokes problem. It is well-known that these kinds of methods lead to arbitrarily ill-conditioned systems and poorly approximated ...
• Simulation of high temperature superconductors and experimental validation 

  Olm Serra, Marc; Badia, Santiago; Martín Huertas, Alberto Francisco (2019-04)
  Article
  Restricted access - publisher's policy

  In this work, we present a parallel, fully-distributed finite element numerical framework to simulate the low-frequency electromagnetic behaviour of superconducting devices, which efficiently exploits high performance ...
• Physics-based balancing domain decomposition by constraints for multi-material problems 

  Badia, Santiago; Martín Huertas, Alberto Francisco; Nguyen, Hieu Trung (2018-11)
  Article
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  In this work, we present a new variant of the balancing domain decomposition by constraints preconditioner that is robust for multi-material problems. We start with a well-balanced subdomain partition, and based on an ...
• Large-scale stochastic topology optimization using adaptive mesh refinement and coarsening through a two-level parallelization scheme 

  Baiges Aznar, Joan; Martínez Frutos, Jesús; Herrero Pérez, David; Otero, Fermín; Ferrer, Alex (2019-01)
  Article
  Restricted access - publisher's policy

  Abstract Topology optimization under uncertainty of large-scale continuum structures is a computational challenge due to the combination of large finite element models and uncertainty propagation methods. The former ...
• Balancing domain decomposition by constraints associated with subobjects 

  Badia, Santiago; Martín Huertas, Alberto Francisco; Nguyen, Hieu Trung (Elsevier, 2019-01)
  Article
  Restricted access - publisher's policy

  A simple variant of the BDDC preconditioner in which constraints are imposed on a selected set of subobjects (subdomain subedges, subfaces and vertices between pairs of subedges) is presented. We are able to show that the ...

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