Results 51 to 60 of about 281,967 (214)

Hexagonal vs. Rectilinear Grids for Explicit Finite Difference Schemes for the Two-dimensional Wave Equation

open access: yes, 2013
Finite difference schemes for the 2-D wave equation operating on hexagonal grids and the accompanyingnumerical dispersion properties have received little attention in comparison to schemes operating on rectilinear grids.
Stefan Bilbao   +3 more
core   +1 more source

Finite difference and finite element methods for partial differential equations on fractals

open access: yesRevista Integración, 2022
In this paper, we present numerical procedures to compute solutions of partial differential equations posed on fractals. In particular, we consider the strong form of the equation using standard graph Laplacian matrices and also weak forms of the ...
Luis F. Contreras H., Juan Galvis
doaj  

Non-Newtonian Fluid Flow Analysis with Finite Difference and Finite Volume Numerical Models

open access: yesApplied Rheology, 2001
Suitability of finite difference method and finite volume method for computation of incompressible non newtonian flow is analyzed. In addition, accuracy of numerical results depending of mesh size is assessed.
Marn Jure, Delic Marjan, Zunic Zoran
doaj   +1 more source

Stability analysis of second- and fourth-order finite-difference modelling of wave propagation in orthotropic media

open access: yes, 2010
The stability of the finite-difference approximation of elastic wave propagation in orthotropic homogeneous media in the three-dimensional case is discussed.
Veres, Istvan
core   +1 more source

Finite difference approximations for a class of non-local parabolic equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
In this paper we study finite difference procedures for a class of parabolic equations with non-local boundary condition. The semi-implicit and fully implicit backward Euler schemes are studied.
Yanping Lin   +2 more
doaj   +1 more source

Finite Difference Operators with a Finite-Band Spectrum [PDF]

open access: yes, 2008
We study the correspondence between almost periodic difference operators and algebraic curves (spectral surfaces). An especial role plays the parametrization of the spectral curves in terms of, so called, branching divisors. The multiplication operator by the covering map with respect to the natural basis in the Hardy space on the surface is the $2d+1$-
Peherstorfer, F., Yuditskii, P.
openaire   +2 more sources

The discontinuous Galerkin method with higher degree finite difference compatibility conditions and arbitrary local and global basis functions

open access: yesComputer Assisted Methods in Engineering and Science, 2017
This paper focuses on the discontinuous Galerkin (DG) method in which the compatibility condition on the mesh skeleton and Dirichlet boundary condition on the outer boundary are enforced with the help of one-dimensional finite difference (FD) rules ...
Jan Jaśkowiec
doaj   +1 more source

Numerical Solutions Of The Nonlocal Problems For The Diffusion Partial Differential Equations

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
    In this work, we use the explicit and the implicit finite-difference methods to solve the nonlocal problem that consists of the diffusion equations together with nonlocal conditions.
Reem. M. Kubba
doaj  

A New Smoothness Indicator of Adaptive Order Weighted Essentially Non-Oscillatory Scheme for Hyperbolic Conservation Laws

open access: yesMathematics, 2020
Adaptive order weighted essentially non-oscillatory scheme (WENO-AO(5,3)) has increased the computational cost and complexity of the classic fifth-order WENO scheme by introducing a complicated smoothness indicator for fifth-order linear reconstruction ...
Omer Musa, Guoping Huang, Mingsheng Wang
doaj   +1 more source

Semi-Lagrangian finite difference method for fluid and kinetic applications

open access: yes, 2021
Qiu, JingmeiHigh order schemes are essential components in scientific computing area due to their superior properties, such as high efficiency and high resolution.
Li, Linjin
core   +1 more source

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