Browsing by Author "Peraire Guitart, Jaume"

A critical comparison of two discontinuous galerkin methods for the navierstokes equations using solenoidal aproximations
Villardi de Montlaur, Adeline de; Peraire Guitart, Jaume; Huerta, Antonio (20090608T07:49:26Z)
Conference report
Open AccessThis paper compares two methods to solve incompressible problems, in particular the NavierStokes equations, using a discontinuous polynomial interpolation that is exactly divergencefree in each element. The first method ... 
A discontinuous galerkin formulation for solid dynamics
Peraire Guitart, Jaume; Bonet Carbonell, Javier; Huerta, Antonio; Persson, Per Olof; Vidal Seguí, Yolanda (Omnipress, 2006)
Lecture
Open Access 
A posteriori finite element error bounds for nonlinear outputs of the Helmholtz equation
Sarrate Ramos, Josep; Peraire Guitart, Jaume; Patera, A. (199909)
Article
Open AccessA Neumann subproblem a posteriori finite element procedure for the efficient and accurate calculation of rigorous, constantfree upper and lower bounds for nonlinear outputs of the Helmholtz equation in twodimensional ... 
A simple shockcapturing technique for highorder discontinuous Galerkin methods
Huerta, Antonio; Casoni Rero, Eva; Peraire Guitart, Jaume (201208)
Article
Open AccessThis article presents a novel shockcapturing technique for the discontinuous Galerkin (DG) method. The technique is designed for compressible flow problems, which are usually characterized by the presence of strong shocks ... 
Are highorder and hybridizable discontinuous galerkin methods competitive
Huerta, Antonio; Roca Navarro, Francisco Javier; Angeloski, Aleksander; Peraire Guitart, Jaume (2012)
Conference report
Restricted access  publisher's policyThe talk covered several issues motivated by a practical engineering wave propagation problem: realtime evaluation of wave agitation in harbors. The first part, presented the application of a reduced order model in the ... 
Bounds and adaptivity for 3D limit analysis
Muñoz, José J.; Bonet Carbonell, Javier; Huerta, Antonio; Peraire Guitart, Jaume (20090608T10:28:14Z)
Conference report
Open AccessIn the present paper we compute upper and lower bounds for limit analysis in two and three dimensions. From the solution of the discretised upper and lower bound problems, and from the optimum displacement rate and stress ... 
Computing bounds for linear functionals of exact weak solutions to Poisson's equation
SauerBudge, A. M.; Bonet Carbonell, Javier; Huerta, Antonio; Peraire Guitart, Jaume (200401)
Article
Open AccessWe present a method for Poisson’s equation that computes guaranteed upper and lower bounds for the values of piecewisepolynomial linear functional outputs of the exact weak solution of the infinitedimensional continuum ... 
Computing upper and lower bounds for the Jintegral in twodimensional linear elasticity
Xuan, Z C; Parés Mariné, Núria; Peraire Guitart, Jaume (200601)
Article
Open AccessWe present an a posteriori method for computing rigorous upper and lower bounds for the Jintegral in twodimensional linear elasticity. The Jintegral, which is typically expressed as a contour integral, is recast as a ... 
Discontinuous Galerkin methods for the Navier–Stokes equations using solenoidal approximations
Villardi de Montlaur, Adeline de; Fernandez Mendez, Sonia; Peraire Guitart, Jaume; Huerta, Antonio (20101020)
Article
Open AccessAn interior penalty method and a compact discontinuous Galerkin method are proposed and compared for the solution of the steady incompressible Navier–Stokes equations. Both compact formulations can be easily applied using ... 
Distortion and quality measures for validating and generating highorder tetrahedral meshes
Gargallo Peiró, Abel; Roca Navarro, Francisco Javier; Peraire Guitart, Jaume; Sarrate Ramos, Josep (20150701)
Article
Open AccessA procedure to quantify the distortion (quality) of a highorder mesh composed of curved tetrahedral elements is presented. The proposed technique has two main applications. First, it can be used to check the validity and ... 
GPUaccelerated sparse matrixvector product for a hybridizable discontinuous Galerkin method
Roca Navarro, Francisco Javier; Nguyeny, N.C.; Peraire Guitart, Jaume (2011)
Conference report
Restricted access  publisher's policyThe iterative solution of the large systems of equations that result from discontinuous Galerkin (DG) discretizations require the ability to carry out fast matrixvector products. DG matrices have a sparse block structure ... 
Highorder mesh generation on CAD geometries
Gargallo Peiró, Abel; Roca Navarro, Francisco Javier; Peraire Guitart, Jaume; Sarrate Ramos, Josep (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013)
Conference report
Restricted access  publisher's policyWe present a technique to extend Jacobianbased distortion (quality) measures for planar triangles to highorder isoparametric elements of any interpolation degree on CAD parameterized surfaces. The resulting distortion ... 
Onedimensional shockcapturing for highorder discontinuous Galerkin methods
Casoni Rero, Eva; Peraire Guitart, Jaume; Huerta, Antonio (201202)
Article
Open AccessDiscontinuous Galerkin methods have emerged in recent years as an alternative for nonlinear conservation equations. In particular, their inherent structure (a numerical flux based on a suitable approximate Riemann solver ... 
Optimal collapse simulator for threedimensional frames
Sarrate Ramos, Josep; Huerta, Antonio; Bonet Carbonell, Javier; Peraire Guitart, Jaume; Saà Seoane, Joel; Vidal Codina, Ferran (Universitat Politècnica de Catalunya. Escola Superior d'Enginyers de Camins Canals i Ports de Barcelona, 20111115)
Conference lecture
Open AccessIn this work a limit analysis for 3D structures software package is presented. The goal is to obtain for a certain structure the load factor λ that applied to the external loads induces collapse to the structure. The ... 
Optimization of a regularized distortion measure to generate curved highorder unstructured tetrahedral meshes
Gargallo Peiró, Abel; Roca Navarro, Francisco Javier; Peraire Guitart, Jaume; Sarrate Ramos, Josep (20150803)
Article
Restricted access  publisher's policyWe present a robust method for generating highorder nodal tetrahedral curved meshes. The approach consists of modifying an initial linear mesh by first, introducing highorder nodes, second, displacing the boundary nodes ... 
Strict upper and lower boundswith adaptive remeshing in limit state analysis
Muñoz, José J.; Huerta, Antonio; Bonet Carbonell, Javier; Peraire Guitart, Jaume (20090403T10:56:47Z)
Conference report
Open AccessBy writing the limit state analysis as an optimisation problem, and after resorting to suitable discretisations of the stress and velocity field, we compute strict bounds of the load factor. The optimisation problem is ... 
The computation of bounds for linearfunctional outputs of weak solutions to the twodimensional elasticity equations
Parés Mariné, Núria; Bonet, J; Huerta, Antonio; Peraire Guitart, Jaume (200601)
Article
Open AccessWe present a method for the computation of upper and lower bounds for linearfunctional outputs of the exact solutions to the two dimensional elasticity equations. The method can be regarded as a generalization of the well ... 
The efficient computation of bounds for functionals of finite element solutions in large strain elasticity
Bonet, J; Huerta, Antonio; Peraire Guitart, Jaume (200209)
Article
Open AccessWe present an implicit a posteriori finite element procedure to compute bounds for functional outputs of finite element solutions in large strain elasticity. The method proposed relies on the existence of a potential energy ... 
Upper and lower bounds in limit analysis: adaptive meshing strategies and discontinuous loading
Muñoz Romero, José; Bonet Carbonell, Javier; Huerta, Antonio; Peraire Guitart, Jaume (200808)
Article
Open Access