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Ara es mostren els items 68-76 de 76

    • Receding front method: a new approach applied to generate hexahedral meshes of outer domains 

      Roca Navarro, Francisco Javier; Ruiz-Gironés, Eloi; Sarrate Ramos, Josep (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Two of the most successful methods to generate unstructured hexahedral meshes are the grid-based methods and the advancing front methods. On the one hand, the grid-based methods generate high quality elements in the inner ...

    • Simultaneous untangling and smoothing of quadrilateral and hexahedral meshes using an object-oriented framework 

      Ruiz-Gironés, Eloi; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep; Montenegro Armas, Rafael; Escobar Sánchez, José M. (2015-02-01)
      Article
      Accés obert
      In this work, we present a simultaneous untangling and smoothing technique for quadrilateral and hexahedral meshes. The algorithm iteratively improves a quadrilateral or hexahedral mesh by minimizing an objective function ...

    • Size preserving mesh generation in adaptivity processes 

      Ruiz Gironés, Eloi; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep (Sociedad Española de Métodos Numéricos en Ingeniería (SEMNI), 2013)
      Text en actes de congrés
      Accés obert
      It is well known that the variations of the element size have to be controlled in order to generate a high-quality mesh. Hence, several techniques have been developed to limit the gradient of the element size. Although ...

    • Size-preserving size functions and smoothing procedures for adaptive quadrilateral mesh generation 

      Ruiz-Gironés, Eloi; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep (2015-07-01)
      Article
      Accés obert
      The generation of meshes that correctly reproduce a prescribed size function is crucial for quadrilateral meshing due to two reasons. First, quadrilateral meshes are difficult to adapt to a given size field by refining or ...

    • Spectral analysis of the Beznar dam accelerogram. Comparison with results in the northeastern of Spain 

      Canas Torres, José Antonio; Barbat Barbat, Horia Alejandro; Pujades Beneit, Lluís; Egozcue Rubí, Juan José; Sarrate Ramos, Josep (1991-12)
      Article
      Accés obert
      Numerical analysis applied to the Beznar dam accelerograms (longitudinal and transversal components) shows that the Fourier amplitude spectrum is a good approximation to the pseudo-velocity spectra. Thís fact makes possible ...

    • The receding front method applied to hexahedral mesh generation of exterior domains 

      Ruiz-Gironés, Eloi; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep (2011-11-30)
      Article
      Accés obert
      Two of the most successful methods to generate unstructured hexahedral meshes are the grid-based methods and the advancing front methods. On the one hand, the grid-based methods generate high-quality hexahedra in the inner ...

    • Unstructured and semi-structured hexahedral mesh generation methods 

      Sarrate Ramos, Josep; Ruiz-Gironés, Eloi; Roca Navarro, Francisco Javier (Saxe-Coburg, 2014)
      Article
      Accés obert
      Discretization techniques such as the finite element method, the finite volume method or the discontinuous Galerkin method are the most used simulation techniques in ap- plied sciences and technology. These methods rely ...

    • Using a computational domain and a three-stage node location procedure for multi-sweeping algorithms 

      Ruiz-Gironés, Eloi; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep (2011)
      Article
      Accés obert
      The multi-sweeping method is one of the most used algorithms to generate hexahedral meshes for extrusion volumes. In this method the geometry is decomposed in sub-volumes by means of projecting nodes along the sweep direction ...

    • Validation and generation of high-order meshes on parameterized surfaces 

      Gargallo Peiró, Abel; Roca Navarro, Francisco Javier; Peraire Guitart, Jaume; Sarrate Ramos, Josep (Sociedad Española de Métodos Numéricos en Ingeniería (SEMNI), 2013)
      Text en actes de congrés
      Accés obert
      We present a technique to extend Jacobian-based distortion (quality) measures for planar triangles to high-order isoparametric elements of any interpolation degree on CAD parameterized surfaces. The resulting distortion ...