Exploració per autor "Espinoza Román, Héctor Gabriel"
Ara es mostren els items 1-9 de 9
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A Sommerfeld non-reflecting boundary condition for the wave equation in mixed form
Espinoza Román, Héctor Gabriel; Codina, Ramon; Badia, Santiago (2014-07-01)
Article
Accés restringit per política de l'editorialIn this paper we develop numerical approximations of the wave equation in mixed form supplemented with non-reflecting boundary conditions (NRBCs) of Sommerfeld-type on artificial boundaries for truncated domains. We consider ... -
A stabilized finite element method for the mixed wave equation in an ALE framework with application to diphthong production
Guasch Fortuny, Oriol; Arnela, Marc; Codina, Ramon; Espinoza Román, Héctor Gabriel (2016-01)
Article
Accés obertWorking with the wave equation in mixed rather than irreducible form allows one to directly account for both, the acoustic pressure field and the acoustic particle velocity field. Indeed, this becomes the natural option ... -
Finite element computation of diphthong sounds using tuned two-dimensional vocal tracts
Arnela, Marc; Guasch Fortuny, Oriol; Codina, Ramon; Espinoza Román, Héctor Gabriel (European Acoustics Association (EEA), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialFinite element methods (FEM) are increasingly being used to simulate the acoustics of the vocal tract. For vowel production, the irreducible wave equation for the acoustic pressure is typically solved. However, diphthong ... -
Multi-objective design optimisation of a 3D-rail stamping process using a robust multi-objective optimisation platform (RMOP)
Lee, Dongseop; Coma Company, Martí; Espinoza Román, Héctor Gabriel; Fruitós Bickham, Óscar Alejandro; Pons Prats, Jordi (CIMNE, 2013)
Text en actes de congrés
Accés obertThe paper investigates the multi-objective design optimisation of a stamping process to control the final shape and the final quality using advanced high strength steels. The design problem of the stamping process is ... -
Multi-objective design optimisation of a 3D-rail stamping process using a robust multi-objective optimisation platform (RMOP)
Lee, DongSeop; Coma Company, Martí; Espinoza Román, Héctor Gabriel; Fruitós Bickham, Óscar Alejandro; Pons Prats, Jordi (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013)
Text en actes de congrés
Accés obertThe paper investigates the multi-objective design optimisation of a stamping process to control the final shape and the final quality using advanced high strength steels. The design problem of the stamping process is ... -
Multi-objective design optimisation of stamping process for advanced high strength steels
Lee, Dong Seop; Pons Prats, Jordi; Espinoza Román, Héctor Gabriel; Fruitós Bickham, Óscar Alejandro; Oñate Ibáñez de Navarra, Eugenio (2012)
Text en actes de congrés
Accés restringit per política de l'editorialThe paper investigates the multi-objective design optimisation of stamping process to control both the shape and quality of final Advanced High Strength Steels (AHSSs) in terms of springback and safety using Distributed ... -
On some time marching schemes for the stabilized finite element approximation of the mixed wave equation
Espinoza Román, Héctor Gabriel; Codina, Ramon; Badia, Santiago (2015-11)
Article
Accés obertIn this paper we analyze time marching schemes for the wave equation in mixed form. The problem is discretized in space using stabilized finite elements. On the one hand, stability and convergence analyses of the fully ... -
Stabilized finite element formulation for the mixed convected wave equation in domains with driven flexible boundaries
Guasch Fortuny, Oriol; Arnela, Marc; Codina, Ramon; Espinoza Román, Héctor Gabriel (2015)
Text en actes de congrés
Accés restringit per política de l'editorialA stabilized finite element (FEM) formulation for the wave equation in mixed form with convection is presented, which permits using the same interpolation fields for the acoustic pressure and the acoustic particle velocity. ... -
Wave propagation problems with aeroacoustic applications
Espinoza Román, Héctor Gabriel (Universitat Politècnica de Catalunya, 2015-05-08)
Tesi
Accés obertThe present work is a compilation of the research produced in the field of wave propagation modeling. It contains in-depth analysis of stability, convergence, dispersion and dissipation of spatial, temporal and spatial-temporal ...