Results 11 to 20 of about 14,304 (157)

The curved mimetic finite difference method: Allowing grids with curved faces

open access: yesJournal of Computational Physics, 2023
We present a new mimetic finite difference method for diffusion problems that converges on grids with \textit{curved} (i.e., non-planar) faces. Crucially, it gives a symmetric discrete problem that uses only one discrete unknown per curved face. The principle at the core of our construction is to abandon the standard definition of local consistency of ...
Pitassi S.   +4 more
openaire   +7 more sources

A Higher-Order Formulation of the Mimetic Finite Difference Method

open access: yesSIAM Journal on Scientific Computing, 2008
A new mimetic finite difference method for the diffusion problem is developed by using a linear interpolation for the numerical fluxes. This approach provides a higher-order accurate approximation to the flux of the exact solution. In analogy with the original formulation, a family of local scalar products is constructed to satisfy the fundamental ...
L. Beirao da Veiga, G. Manzini
openaire   +5 more sources

Convergence of the Mimetic Finite Difference Method for Diffusion Problems on Polyhedral Meshes [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2005
The stability and convergence properties of the mimetic finite difference method for diffusion-type problems on polyhedral meshes are analyzed. The optimal convergence rates for the scalar and vector variables in the mixed formulation of the problem are proved.
Brezzi F, Lipnikov K, Shashkov M
openaire   +4 more sources

Superconvergence of the Velocity in Mimetic Finite Difference Methods on Quadrilaterals [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2005
Summary: Superconvergence of the velocity is established for mimetic finite difference approximations of second-order elliptic problems over \(h^2\)-uniform quadrilateral meshes. The superconvergence holds for a full tensor coefficient. The analysis exploits a relation between mimetic finite differences and mixed finite element methods via a special ...
Berndt, M.   +4 more
openaire   +4 more sources

Mimetic finite difference method for the Stokes problem on polygonal meshes [PDF]

open access: yesJournal of Computational Physics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
L. Beirao da Veiga   +3 more
openaire   +6 more sources

Numerical results for mimetic discretization of Reissner-Mindlin plate problems [PDF]

open access: yes, 2012
A low-order mimetic finite difference (MFD) method for Reissner-Mindlin plate problems is considered. Together with the source problem, the free vibration and the buckling problems are investigated.
da Veiga, Lourenco Beirao   +2 more
core   +1 more source

A mortar mimetic finite difference method on non-matching grids [PDF]

open access: yesNumerische Mathematik, 2005
This paper deals with the mimetic finite difference (MFD) method on nonmatching multiblock grids for second-order linear elliptic equation with Dirichlet boundary conditions. The authors establish a relation between the mortar MFD method and mortar mixed finite element methods.
Berndt, Markus   +4 more
openaire   +2 more sources

An Efficient Hybrid Model for Nonlinear Two-Phase Flow in Fractured Low-Permeability Reservoir

open access: yesEnergies, 2019
The staged fracturing horizontal well has proven to be an attractive alternative for improving the development effect of a low permeability waterflood reservoir.
Daigang Wang   +3 more
doaj   +1 more source

Analysis of Compatible Discrete Operator Schemes for the Stokes Equations on Polyhedral Meshes [PDF]

open access: yes, 2014
Compatible Discrete Operator schemes preserve basic properties of the continuous model at the discrete level. They combine discrete differential operators that discretize exactly topological laws and discrete Hodge operators that approximate constitutive
Bonelle, Jerome, Ern, Alexandre
core   +6 more sources

Addressing Integration Error for Polygonal Finite Elements Through Polynomial Projections: A Patch Test Connection [PDF]

open access: yes, 2013
Polygonal finite elements generally do not pass the patch test as a result of quadrature error in the evaluation of weak form integrals. In this work, we examine the consequences of lack of polynomial consistency and show that it can lead to a ...
Paulino, Glaucio H., Talischi, Cameron
core   +1 more source

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