Buscar
Mostrando ítems 11-20 de 63
Artículo
A variational finite element model for Large-Eddy simulations of turbulent flows
(Springer, 2013-09)
We introduce a new Large Eddy Simulation model in a channel, based on the projection on finite element spaces as filtering operation in its variational form, for a given triangulation {Th}h>0. The eddy viscosity is expressed ...
Artículo
Certified Reduced Basis VMS-Smagorinsky model for natural convection ow in a cavity with variable height
(ScienceDirect, 2020-02-03)
In this work we present a Reduced Basis VMS-Smagorinsky Boussinesq model, applied to natural convection problems in a variable height cavity, in which the buoyancy forces are involved. We take into account in this problem ...
Artículo
A posteriori variational multiscale methods for the 1D convection-diffusion equations
(Académie des Sciences, 2023-06-09)
The present work is a continuation of a paper presented by the two first authors in the proceedings of the “Computational Science for the 21st century” conference held in Tours in 1997 honouring the 60th birthday of Roland ...
Artículo
A FETI method with a mesh independent condition number for the iteration matrix
(Elsevier, 2008-02-15)
We introduce a framework for FETI methods using ideas from the decomposition via Lagrange multipliers of H1 0 (Ω) derived by Raviart-Thomas [22] P.-A. Raviart, J.-M. Thomas, Primal Hybrid Finite Element Metho and complemented ...
Artículo
A model for two coupled turbulent fluids. Part II: numerical analysis of a spectral discretization
(Society for Industrial and Applied Mathematics, 2002)
We consider a system of equations that models the stationary flow of two immiscible turbulentfluids on adjacentsubdomains. The equations are coupled by nonlinear boundary conditions on the interface which is here a fixed ...
Capítulo de Libro
Low rank approximation of multidimensional data
(Springer, 2019)
In the last decades, numerical simulation has experienced tremendous improvements driven by massive growth of computing power. Exascale computing has been achieved this year and will allow solving ever more complex problems. ...
Artículo
Stabilization of a non standard FETI-DP mortar method for the Stokes problem
(EDP Sciences, 2014-01)
In a recent paper [E. Chacón Vera and D. Franco Coronil, J. Numer. Math. 20 (2012) 161–182.] a non standard mortar method for incompressible Stokes problem was introduced where the use of the trace spaces H1/2 and H1/2 00 ...
Tesis Doctoral
Contribución al estudio del modelo M.P.P. de turbulencia
(1984-09-22)
El modelo M.P.P. de turbulencia presenta una resolución formal del problema de cierre de Reynolds que expresa matemáticamente las interacciones entre el campo medio y la fluctuación turbulenta en el movimiento de un fluido. ...
Capítulo de Libro
Numerical solution of a Laplace equation with data in L1
(Universidad de Zaragoza, 2003)
In this work, we address the numerical solution of the Laplace equation with data in L1 by IP1 finite element schemes. Even if this is a simple problem, its analysis is difficult and requires new tools because finite ...
Artículo
Helicity in turbulence modelling by homogenization
(Institut National de Recherche en Informatique et en Automatique, 1991-09)