Results 41 to 50 of about 37,916 (260)

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

Stability and convergence of a local discontinuous Galerkin finite element method for the general Lax equation

Open Mathematics, 2018
In this paper we develop and analyze the local discontinuous Galerkin (LDG) finite element method for solving the general Lax equation. The local discontinuous Galerkin method has the flexibility for arbitrary h and p adaptivity, and allows for hanging ...
Wei Leilei, Mu Yundong
doaj   +1 more source

Solution of 3D heat conduction equations using the discontinuous Galerkin method on unstructured grids

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
The discontinuous Galerkin method with discontinuous basic functions which is characterized by a high order of accuracy of the obtained solution is now widely used.
Ruslan V Zhalnin, Marina E Ladonkina, Victor F Masyagin, Vladimir F Tishkin   +3 more
doaj   +1 more source

Time-space adaptive discontinuous Galerkin method for advection-diffusion equations with non-linear reaction mechanism

, 2014
In this work, we apply a time-space adaptive discontinuous Galerkin method using the elliptic reconstruction technique with a robust (in P\'eclet number) elliptic error estimator in space, for the convection dominated parabolic problems with non-linear ...
Karasözen, Bülent, Uzunca, Murat
core   +1 more source

Numerical simulations with a first order BSSN formulation of Einstein's field equations [PDF]

, 2012
We present a new fully first order strongly hyperbolic representation of the BSSN formulation of Einstein's equations with optional constraint damping terms.
Abdul H. Mroué, Erik Schnetter, F. Pretorius, Frank Herrmann, H.-O. Kreiss, J. David Brown, J. A. Schouten, J. S. Hesthaven, Jan S. Hesthaven, L. Blanchet, M. Taylor, Manuel Tiglio, Michael Wagman, Olivier Sarbach, Peter Diener, Scott E. Field, T. Goodale   +16 more
core   +3 more sources

Application of High‐Order Direct Flux Reconstruction and Stiffness‐Resilient Time Integration to Simulations of Idealized Atmospheric Flows

International Journal for Numerical Methods in Fluids, EarlyView.
The proposed work implements a direct flux reconstruction method for spatial discretization and a stiffness‐resilient exponential time integration method for temporal discretization on the cube‐sphere grid. A space‐time tensor formalism is employed to provide a general representation in any curvilinear coordinate system. This combination enables highly
Stéphane Gaudreault, Christopher Subich, Shoyon Panday, Martin Charron, Vincent Magnoux, Valentin Dallerit, Mayya Tokman   +6 more
wiley   +1 more source

On discontinuous Galerkin methods

International Journal for Numerical Methods in Engineering, 2003
AbstractDiscontinuous Galerkin methods have received considerable attention in recent years for problems in which advection and diffusion terms are present. Several alternatives for treating the diffusion and advective fluxes have been introduced. This report summarizes some of the methods that have been proposed.Several numerical examples are included
Zienkiewicz, OC, Taylor, RL, Sherwin, SJ, Peiro, J   +3 more
openaire   +5 more sources

Discontinuous Galerkin approach for two-parametric convection-diffusion equation with discontinuous source term [PDF]

Iranian Journal of Numerical Analysis and Optimization
In this article, we explore the discontinuous Galerkin finite element method for two-parametric singularly perturbed convection-diffusion problems with a discontinuous source term.
K. R. Ranjan, S. Gowrisankar
doaj   +1 more source

High Order Discontinuous Galerkin Method [PDF]

, 2007
Standard continuous Galerkin-based finite element methods have poor stability properties when applied to transport-dominated flow problems, so excessive numerical stabilization is needed.
Stamm, Benjamin
core  

A Discontinuous Galerkin Method for Ideal Two-Fluid Plasma Equations

, 2010
A discontinuous Galerkin method for the ideal 5 moment two-fluid plasma system is presented. The method uses a second or third order discontinuous Galerkin spatial discretization and a third order TVD Runge-Kutta time stepping scheme.
Ammar Hakim, Bhattacharjee, Biswas, Cockburn, Cockburn, Durran, John Loverich, Solovev, Uri Shumlak   +8 more
core   +1 more source