Exploració per autor "Principe, Ricardo Javier"
Ara es mostren els items 1-20 de 20
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A massively parallel implementation of multilevel Monte Carlo for finite element models
Badia, Santiago; Hampton, Jerrad; Principe, Ricardo Javier (2023-11-01)
Article
Accés obertThe Multilevel Monte Carlo (MLMC) method has proven to be an effective variance-reduction statistical method for Uncertainty Quantification (UQ) in Partial Differential Equation (PDE) models, combining model computations ... -
A robust and scalable unfitted adaptive finite element framework for nonlinear solid mechanics
Badia, Santiago; Caicedo Silva, Manuel Alejandro; Martín, Alberto F.; Principe, Ricardo Javier (2021-12)
Article
Accés obertIn this work, we bridge standard Adaptive Mesh Refinement and coarsening (AMR) on scalable octree background meshes and robust unfitted Finite Element (FE) formulations for the automatic and efficient solution of large-scale ... -
Assessment of variational multiscale models for the large eddy simulation of turbulent incompressible flows
Colomés Gené, Oriol; Badia, Santiago; Codina, Ramon; Principe, Ricardo Javier (2015-03)
Article
Accés obertIn this work we study the performance of some variational multiscale models (VMS) in the large eddy simulation (LES) of turbulent flows. We consider VMS models obtained by different subgrid scale approximations which include ... -
Driving mechanisms and streamwise homogeneity in molecular dynamics simulations of nanochannel flows
Bitrian Varea, Vicente; Principe, Ricardo Javier (2018-01-12)
Article
Accés obertIn molecular dynamics simulations, nanochannel flows are usually driven by a constant force, that aims to represent a pressure difference between inlet and outlet, and periodic boundary conditions are applied in the ... -
Embedded multilevel monte carlo for uncertainty quantification in random domains
Badia, Santiago; Principe, Ricardo Javier (Begell House, 2021-01-01)
Article
Accés obertThe multilevel Monte Carlo (MLMC) method has proven to be an effective variance-reduction statistical method for uncertainty quantification (UQ) in partial differential equation (PDE) models. It combines approximations at ... -
Enhanced balancing Neumann-Neumann preconditioning in computational fluid and solid mechanics
Badia, Santiago; Martín Huertas, Alberto Francisco; Principe, Ricardo Javier (2012)
Report de recerca
Accés obertManuscript submitted for publication in International Journal for Numerical Methods in Engineering. Under review. -
FEMPAR: an object-oriented parallel finite element framework
Badia, Santiago; Martín Huertas, Alberto Francisco; Principe, Ricardo Javier (2018-04)
Article
Accés obertFEMPAR is an open source object oriented Fortran200X scientific software library for the high-performance scalable simulation of complex multiphysics problems governed by partial differential equations at large scales, by ... -
FEMPAR: Scaling Multi-Level Domain Decomposition up to the full JUQUEEN supercomputer
Martín Huertas, Alberto Francisco; Badia, Santiago; Principe, Ricardo Javier (2015)
Report de recerca
Accés obertIn conjunction with this year's JUQUEEN Porting and Tuning Workshop, which is part of the PRACE Advanced Training Centres curriculum, JSC continued its series of BlueGene Extreme Scaling Workshops. Seven application teams ... -
Finite element approximation of turbulent thermally coupled incompressible flows with numerical sub-grid scale modeling
Codina, Ramon; Principe, Ricardo Javier; Ávila, Matías (2009-08-14)
Article
Accés obertThe objective of this work is to describe a variational multiscale finite element approximation for the incompressible Navier-Stokes equations using the Boussinesq approximation to model thermal coupling. The main feature ... -
Finite element dynamical sub-grid scale approximation of low mach number flow equations
Ávila, Matias; Principe, Ricardo Javier; Codina, Ramon (2010)
Comunicació de congrés
Accés obert -
Finite element dynamical subgrid-scale model for low Mach number flows with radiative heat transfer
Ávila Salinas, Matias Oscar; Codina, Ramon; Principe, Ricardo Javier (2015)
Article
Accés restringit per política de l'editorialThe purpose of this paper is to present a finite element approximation of the low Mach number equations coupled with radiative equations to account for radiative heat transfer. For high-temperature flows this coupling can ... -
Implementation and scalability analysis of balancing domain decomposition methods
Badia, Santiago; Martín Huertas, Alberto Francisco; Principe, Ricardo Javier (2012)
Report de recerca
Accés obertManuscript submitted for publication in SIAM Journal of Scientific Computing. Under Review. -
Mixed finite element methods with convection stabilization for the large eddy simulation of incompressible turbulent flows
Colomés Gené, Oriol; Badia, Santiago; Principe, Ricardo Javier (2016-06)
Article
Accés obertThe variational multiscale method thought as an implicit large eddy simulation model for turbulent flows has been shown to be an alternative to the widely used physical-based models. This method is traditionally combined ... -
Multilevel balancing domain decomposition at extreme scales
Badia, Santiago; Martín Huertas, Alberto Francisco; Principe, Ricardo Javier (2016-01-01)
Article
Accés obert© 2016 Society for Industrial and Applied Mathematics. In this paper we present a fully distributed, communicator-aware, recursive, and interlevel-overlapped message-passing implementation of the multilevel balancing domain ... -
On the approximation of the subgrid scale for systems of equations
Principe, Ricardo Javier; Codina, Ramon (2008)
Ressenya
Accés obert -
On the scalability of inexact balancing domain decomposition by constraints with overlapped coarse/fine corrections
Badia, Santiago; Martín Huertas, Alberto Francisco; Principe, Ricardo Javier (2015-12)
Article
Accés obertIn this work, we analyze the scalability of inexact two-level balancing domain decomposition by constraints (BDDC) preconditioners for Krylov subspace iterative solvers, when using a highly scalable asynchronous parallel ... -
On the stabilization parameter in the subgrid scale approximation of scalar convection-diffusion-reaction equations on distorted meshes
Principe, Ricardo Javier; Codina, Ramon (2010-04-01)
Article
Accés restringit per política de l'editorialIn this paper we revisit the definition of the stabilization parameter in the finite element approximation of the convection–diffusion–reaction equation. The starting point is the decomposition of the unknown into its ... -
On the use of ensemble averaging techniques to accelerate the Uncertainty Quantification of CFD predictions in wind engineering
Tosi, Riccardo; Núñez Corbacho, Marc; Pons Prats, Jordi; Principe, Ricardo Javier; Rossi, Riccardo (2022-09)
Article
Accés obertIn this work we focus on reducing the wall clock time required to compute statistical estimators of highly chaotic incompressible flows on high performance computing systems. Our approach consists of replacing a single ... -
Spatial approximation of the radiation transport equation using a two-scale finite element method
Ávila, Matías; Codina, Ramon; Principe, Ricardo Javier (2009-08-11)
Article
Accés obertIn this paper we present stabilized finite element methods to discretize in space the monochromatic radiation transport equation. These methods are based on the decomposition of the unknowns into resolvable and subgrid ... -
The dissipative structure of variational multiscale methods for incompressible flows
Principe, Ricardo Javier; Codina, Ramon; Henke, Florian (2010-02-01)
Article
Accés restringit per política de l'editorialIn this paper, we present a precise definition of the numerical dissipation for the orthogonal projection version of the variational multiscale method for incompressible flows. We show that, only if the space of subscales ...