• Experimental and numerical modeling of a sloshing problem in a stepped based rectangular tank 

  Gandara Imilqueo, Tomás; Castillo del Barrio, Ernesto; Cruchaga, Marcela A.; Baiges Aznar, Joan (2021-03)
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  In this study, the two-dimensional sloshing of water in a stepped based tank partially filled was analyzed using an arbitrary Lagrangian–Eulerian adaptive fixed-mesh method and including the Smagorinsky turbulence model. ...
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  Analysis of a stabilized finite element approximation for a linearized logarithmic reformulation of the viscoelastic flow problem 

  Codina, Ramon; Moreno Martínez, Laura (2021-02)
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  Open Access

  In this paper we present the numerical analysis of a finite element method for a linearized viscoelastic flow problem. In particular, we analyze a linearization of the logarithmic reformulation of the problem, which in ...
• A stabilised displacement–volumetric strain formulation for nearly incompressible and anisotropic materials 

  Rossi, Riccardo; Zorrilla Martínez, Rubén; Codina, Ramon (2021-04)
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  The simulation of structural problems involving the deformations of volumetric bodies is of paramount importance in many areas of engineering. Although the use of tetrahedral elements is extremely appealing, tetrahedral ...
• Stabilised variational multi-scale finite element formulations for viscoelastic fluids 

  Castillo, Ernesto; Moreno Martínez, Laura; Baiges Aznar, Joan; Codina, Ramon (2021-05)
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  The objective of this article is to summarise the work that we have been doing as a group in the context of stabilised finite element formulations for viscoelastic fluid flows. Viscoelastic fluids are complex non-Newtonian ...
• Development of an algebraic fractional step scheme for the primitive formulation of the compressible Navier-Stokes equations 

  Parada Bustelo, Samuel; Codina, Ramon; Baiges Aznar, Joan (2021-05)
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  In this work we address the compressible Navier-Stokes equations written in the so-called primitive formulation. The proposed methodology is a finite-element solver based on a fractional step scheme in time, which allows ...
• A posteriori error estimates in a finite element VMS-based reduced order model for the incompressible Navier-Stokes equations 

  Codina, Ramon; Reyes, Ricardo; Baiges Aznar, Joan (2021-03)
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  In this paper we present an a posteriori error estimate for a reduced order model (ROM) for the incompressible Navier-Stokes equations that is based on the fact that the full order model is a finite element (FE) approximation. ...
• An adaptive Finite Element strategy for the numerical simulation of additive manufacturing processes 

  Baiges Aznar, Joan; Chiumenti, Michele; Filho, Carlos Augusto Moreira; Cervera Ruiz, Miguel; Codina, Ramon (Elsevier, 2021-01)
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  In this work an adaptive Finite Element strategy to deal with the numerical simulation of Additive Manufacturing (AM) processes is presented. The Selective Laser Melting (SLM) is chosen as the reference technology because ...
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  Field-to-field coupled fluid structure interaction: a reduced order model study 

  Tello Guerra, Alexis; Codina, Ramon (2021-01)
  Article
  Open Access

  The standard Fluid-Structure Interaction (fsi) coupling, that uses as unknowns velocity and pressure for the fluid and displacements for the solid, is compared against two novel types of coupling, the first one a three-field ...
• A stabilized mixed finite element approximation for incompressible finite strain solid dynamics using a total Lagrangian formulation 

  Castañar Pérez, Inocencio; Baiges Aznar, Joan; Codina, Ramon (2020-08)
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  In this work a new methodology for both the nearly and fully incompressible transient finite strain solid mechanics problem is presented. To this end, the momentum equation is complemented with a constitutive law for the ...
• Solution of transient viscoelastic flow problems approximated by a term-by-term VMS stabilized finite element formulation using time-dependent subgrid-scales 

  Moreno Martínez, Laura; Codina, Ramon; Baiges Aznar, Joan (2020-08)
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  Some finite element stabilized formulations for transient viscoelastic flow problems are presented in this paper. These are based on the Variational Multiscale (VMS) method, following the approach introduced in Castillo ...
• Element boundary terms in reduced order models for flow problems: domain decomposition and adaptive coarse mesh hyper-reduction 

  Reyes, Ricardo; Codina, Ramon (2020-08)
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  In this paper we present a finite-element based reduced order model and, in particular, we consider two aspects related to the introduction of inter-element boundary terms in the formulation. The first is a domain decomposition ...
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  Fluid structure interaction by means of variational multiscale reduced order models 

  Tello Guerra, Alexis; Codina, Ramon; Baiges Aznar, Joan (2020-06)
  Article
  Open Access

  A reduced order model designed by means of a variational multiscale stabilized formulation has been applied successfully to fluid-structure interaction problems in a strongly coupled partitioned solution scheme. Details ...

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