Exploració per tema "Difference equations--Numerical solutions"
Ara es mostren els items 1-20 de 30
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A continuous-discontinuous model for crack branching
(John Wiley & sons, 2019-10-05)
Article
Accés obertA new continuous-discontinuous model for fracture that accounts for crack branching in a natural manner is presented. It combines a gradient-enhanced damage model based on nonlocal displacements to describe diffuse cracks ... -
A face-centred finite volume approach for coupled transport phenomena and fluid flow
(2024-01-01)
Article
Accés obertWe present a particular derivation of the face-centred finite volume (FCFV) method and study its performance in non-linear, coupled transport problems commonly encountered in geoscientific and geotechnical applications. ... -
A finite element method for the solution of potencial flow in two dimensions
(1991-07)
Report de recerca
Accés obert -
A finite point method for adaptive three-dimensional compressible flow calculation
(2008-10)
Report de recerca
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 system ... -
A general methodology for deriving shear contrained Reissner Mindlin plate elements
(1990-06)
Report de recerca
Accés obert -
A hybridizable discontinuous Galerkin phase-field model for brittle fracture with adaptive refinement
(John Wiley & sons, 2020-03-30)
Article
Accés obertIn this paper, we propose an adaptive refinement strategy for phase-field models of brittle fracture, which is based on a novel hybridizable discontinuous Galerkin (HDG) formulation of the problem. The adaptive procedure ... -
A model for Janus and Epimetheus
(Universitat Politècnica de Catalunya, 2015-10)
Treball Final de Grau
Accés obertIn this work we present a model that tries to fit the behaviour of Janus and Epimetheus, two co-orbital moons of Saturn. This has been done before using the model for the two-dimensional restricted three-body problem, and ... -
A non-oscillatory face-centred finite volume method for compressible flows
(Elsevier, 2022-03-15)
Article
Accés obertThis work presents the face-centred finite volume (FCFV) paradigm for the simulation of compressible flows. The FCFV method defines the unknowns at the face barycentre and uses a hybridisation procedure to eliminate all ... -
A second-order face-centred finite volume method for elliptic problems
(2020-01-01)
Article
Accés obertA second-order face-centred finite volume method (FCFV) is proposed. Contrary to the more popular cell-centred and vertex-centred finite volume (FV) techniques, the proposed method defines the solution on the faces of the ... -
A second-order face-centred finite volume method on general meshes with automatic mesh adaptation
(2020-01-01)
Article
Accés obertA second-order face-centred finite volume strategy on general meshes is pro-posed. The method uses a mixed formulation in which a constant approximationof the unknown is computed on the faces of the mesh. Such information ... -
A simple triangular element for thick and thin plate and shell analysis
(1993-03)
Report de recerca
Accés obert -
A superconvergent HDG method for stokes flow with strongly enforced symmetry of the stress tensor
(2018-12)
Article
Accés obertThis work proposes a superconvergent hybridizable discontinuous Galerkin (HDG) method for the approximation of the Cauchy formulation of the Stokes equation using same degree of polynomials for the primal and mixed variables. ... -
A temperature-based formulation for finite element analysis of generalized phase-change problems
(1993-01)
Report de recerca
Accés obert -
A weakly compressible hybridizable discontinuous Galerkin formulation for fluid-structure interaction problems
(2020-12-01)
Article
Accés obertA scheme for the solution of fluid-structure interaction (FSI) problems with weakly compressible flows is proposed in this work. A novel hybridizable discontinuous Galerkin (HDG) method is derived for the discretization ... -
An augmented Lagrangian formulation to impose boundary conditions for distortion based mesh moving and curving
(Elsevier, 2017)
Text en actes de congrés
Accés restringit per política de l'editorialWe formulate a mesh morphing technique as mesh distortion minimization problem constrained to weakly satisfy the imposed displacement of the boundary nodes. The method is devised to penalize the appearance of inverted ... -
An HDG formulation for incompressible and immiscible two-phase porous media flow problems
(Taylor & Francis, 2019-05-27)
Article
Accés obertWe develop a high-order hybridisable discontinuous Galerkin (HDG) formulation to solve the immiscible and incompressible two-phase flow problem in a heterogeneous porous media. The HDG method is locally conservative, has ... -
Análisis dinámico de estructuras de lámias y vigas
(1993-10)
Report de recerca
Accés obert -
Approximation of immersed surfaces into a tetrahedral mesh generated by the meccano method
(2017)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, we present a new method to insert open surfaces into an existing tetrahedral mesh generated by the meccano method. The surfaces must be totally immersed in the mesh and must not intersect between them. The ... -
Approximation of tensor fields on surfaces of arbitrary topology based on local Monge parametrizations
(2020-03-15)
Article
Accés obertWe introduce a new method, the Local Monge Parametrizations (LMP) method, to approximate tensor fields on general surfaces given by a collection of local parametrizations, e.g. as in finite element or NURBS surface ... -
Comparison of continuous and hybridizable discontinuous Galerkin methods in incompressible fluid flow problems
(International Centre for Numerical Methods in Engineering (CIMNE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialA comparison of the computational efficiency between Continuous Galerkin (CG) methods, with Taylor–Hood approximations, and Hybridizable Discontinuous Galerkin (HDG) methods is presented for the solution of the incompressible ...