Exploració per autor "Guasch Fortuny, Oriol"
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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 ... -
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
Accés obertA 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 ... -
Concurrent finite element simulation of quadrupolar and dipolar flow noise in low Mach number aeroacoustics
Guasch Fortuny, Oriol; Pont Ribas, Arnau; Baiges Aznar, Joan; Codina, Ramon (Elsevier, 2016-07)
Article
Accés obertThe computation of flow-induced noise at low Mach numbers usually relies on a two-step hybrid methodolgy. In the first step, an incompressible fluid dynamics simulation (CFD) is performed and an acoustic source term is ... -
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 ... -
Residual-based stabilization of the finite element approximation to the acoustic perturbation equations for low Mach number aeroacoustics
Guasch Fortuny, Oriol; Sánchez Martín, Patricia; Pont Ribas, Arnau; Baiges Aznar, Joan; Codina, Ramon (2016-12)
Article
Accés obertThe acoustic perturbation equations (APE) are suitable to predict aerodynamic noise in the presence of a non-uniform mean flow. As for any hybrid computational aeroacoustics approach, a first computational fluid dynamics ... -
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. ... -
The solution of vibroacoustic linear systems as a finite sum of transmission paths
Magrans Fontrodona, Francesc Xavier; Aragonès, Àngels; Rodríguez Ferran, Antonio; Guasch Fortuny, Oriol (2021-05-15)
Article
Accés obertLinear systems are frequently encountered in low, mid and high vibroacoustics modelling of mechanical built-up structures. It has recently been proved that the solution to those systems can be always factorized as an ... -
Unified solver for fluid dynamics and aeroacoustics in isentropic gas flows
Pont Ribas, Arnau; Codina, Ramon; Baiges Aznar, Joan; Guasch Fortuny, Oriol (2018-06)
Article
Accés obertThe high computational cost of solving numerically the fully compressible Navier–Stokes equations, together with the poor performance of most numerical formulations for compressible flow in the low Mach number regime, has ...