Exploració per autor "Idelsohn Barg, Sergio Rodolfo"
Ara es mostren els items 1-20 de 58
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A compressible Lagrangian framework for the simulation of the underwater implosion of large air bubbles
(2013-03)
Article
Accés restringit per política de l'editorialA fully Lagrangian compressible numerical framework for the simulation of underwater implosion of a large air bubble is presented. Both air and water are considered compressible and the equations for the Lagrangian shock ... -
A compressible Lagrangian framework for the simulation of underwater implosion problems
(Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013)
Llibre
Accés restringit per política de l'editorialThe development of efficient algorithms to understand implosion dynamics presents a number of challenges. The foremost challenge is to efficiently represent the coupled compressible fluid dynamics of internal air and ... -
Advances in the particle finite element method (PFEM) for solving coupled problems in engineering
(Springer, 2011)
Capítol de llibre
Accés restringit per política de l'editorialWe present some developments in the formulation of the Particle Finite Element Method (PFEM) for analysis of complex coupled problems on fluid and solid mechanics in engineering accounting for fluid-structure interaction ... -
Advances in the simulation of multi-fluid flows with the particle finite element method. Application to bubble dynamics
(2010)
Article
Accés restringit per política de l'editorialIn this work, we extend the Particle Finite Element Method (PFEM) to multi-fluid flow problems with the aim of exploiting the fact that Lagrangian methods are specially well suited for tracking interfaces. We develop a ... -
A fast and accurate method to solve the incompressible Navier-Stokes equations
(2013-02)
Article
Accés restringit per política de l'editorialPurpose: The purpose of this paper is to highlight the possibilities of a novel Lagrangian formulation in dealing with the solution of the incompressible Navier-Stokes equations with very large time steps. Design/meth ... -
A finite point method for adaptive-three-dimensional compressible flow calculations
(2009-07-30)
Article
Accés obertThe finite point method (FPM) is a meshless technique, which is based on both, a weighted least-squares numerical approximation on local clouds of points and a collocation technique which allows obtaining the discrete ... -
A general stabilized formulation for incompressible fluid flow using finite calculus and the finite element method
(CIMNE, 2003-11)
Capítol de llibre
Accés restringit per política de l'editorialWe present a general formulation for incompressible fluid flow analysis using the finite element method (FEM). The necessary stabilization for dealing with convective effects and the incompressibility condition are introduced ... -
A meshless finite point method for the three-dimensional analysis of compressible flow problems involving moving boundaries and adaptivity
(2013-10-10)
Article
Accés restringit per política de l'editorialA finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind-biased discretization of the Euler equations, written ... -
A meshless finite point method for three dimensional analysis of compressible flow problems involving moving boundaries and adaptivity
(2013-10)
Article
Accés restringit per política de l'editorialA finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind-biased discretization of the Euler equations, written ... -
A meshless finite point method for three-dimensional analysis of compressible flow problems involving moving boundaries and adaptivity
(2013-10)
Article
Accés obertA finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind-biased discretization of the Euler equations, written ... -
A monolithic Lagrangian approach for fluid-structure interaction problems
(2010-08)
Article
Accés restringit per política de l'editorialCurrent work presents a monolithic method for the solution of fluid–structure interaction problems involving flexible structures and free-surface flows. The technique presented is based upon the utilization of a Lagrangian ... -
An improved enrichment method for weak discontinuities for thermal problems
(2017-07)
Article
Accés restringit per política de l'editorialThe purpose of this paper is to propose a new elemental enrichment technique to improve the accuracy of the simulations of thermal problems containing weak discontinuities. Design/methodology/approach - The enrichment is ... -
Aplicación de los métodos {alfa} de integración temporal al problema de transmisión del calor con cambio de fase
(Centro Internacional de Métodos Numéricos en Ingeniería, 1991)
Article
Accés obertEn trabajos recientes se han propuesto un método de dominio fijo y sin paramétros de regularización para tratar el problema de transmisión del calor con cambio de fase. En este trabajo se estudia la aplicación de la familia ... -
A portable OpenCL-based unstructured edge-based Finite Element Navier-Stokes solver on graphics hardware
(Elsevier, 2013-07)
Article
Accés obertThe rise of GPUs in modern high-performance systems increases the interest in porting portion of codes to such hardware. The current paper aims to explore the performance of a portable state-of-the-art FE solver on GPU ... -
A-posteriori error estimation for the finite point method with applications to compressible flow
(2017-04-03)
Article
Accés obertAn a-posteriori error estimate with application to inviscid compressible flow problems is presented. The estimate is a surrogate measure of the discretization error, obtained from an approximation to the truncation terms ... -
Application of the finite point method to high- Reynolds number compressible flow problems
(2014-04-10)
Article
Accés restringit per política de l'editorialIn this work, the finite point method is applied to the solution of high-Reynolds compressible viscous flows. The aim is to explore this important field of applications focusing on two main aspects: the easiness and ... -
A reduced-order model based on the coupled 1D-3D finite element simulations for an efficient analysis of hemodynamics problems
(2014-05-23)
Article
Accés obertA reduced-order model for an efficient analysis of cardiovascular hemodynamics problems using multiscale approach is presented in this work. Starting from a patient-specific computational mesh obtained by medical imaging ... -
A semi-analytical model for droplet dynamics on the GDL surface of a PEFC electrode
(2015-04)
Article
Accés obertWater management is one of the key factors in Proton Exchange Fuel Cell (PEFC) performance. The water produced within the fuel cell is evacuated through the gas channels, but at high current densities water can block the ... -
A unified monolithic approach for multi-fluid flows and fluid-structure interaction using the Particle Finite Element Method with fixed mesh
(2015-06)
Article
Accés obertThis paper describes a strategy to solve multi-fluid and fluid-structure interaction (FSI) problems using Lagrangian particles combined with a fixed finite element (FE) mesh. Our approach is an extension of the fluid-only ... -
Avoiding instabilities caused by added mass effects in fluid-structure interaction problems
(John Wiley & Sons, 2010)
Capítol de llibre
Accés restringit per política de l'editorialThe main goal of this paper is to present a new strategy to avoid the unstable behavior caused by added mass effects in approaches the involve pressure segregation or staggered techniques in incompressible flows. We will ...
