Results 1 to 10 of about 625,960 (181)

Parametric Problems in Power System Analysis: Recent Applications of Polynomial Approximation Based on Galerkin Method

open access: yesJournal of Modern Power Systems and Clean Energy, 2021
In power systems, there are many uncertainty factors such as power outputs of distributed generations and fluctuations of loads. It is very beneficial to power system analysis to acquire an explicit function describing the relationship between these ...
Hao Wu   +5 more
doaj   +1 more source

An h-Adaptive Poly-Sinc-Based Local Discontinuous Galerkin Method for Elliptic Partial Differential Equations

open access: yesAxioms, 2023
For the purpose of solving elliptic partial differential equations, we suggest a new approach using an h-adaptive local discontinuous Galerkin approximation based on Sinc points.
Omar A. Khalil, Gerd Baumann
doaj   +1 more source

Pareto optimal control problem and its Galerkin approximation for a nonlinear one-dimensional extensible beam equation [PDF]

open access: yesOpuscula Mathematica, 2016
Our goal is to study the Pareto optimal control system for a nonlinear one-dimensional extensible beam equation and its Galerkin approximation. First we consider a mathematical model of the beam equation which was obtained by S. Woinowsky-Krieger in 1950.
Andrzej Just, Zdzislaw Stempień
doaj   +1 more source

Penalty parameter and dual-wind discontinuous Galerkin approximation methods for elliptic second order PDEs

open access: yesElectronic Journal of Differential Equations, 2022
This article analyzes the effect of the penalty parameter used in  symmetric dual-wind discontinuous Galerkin (DWDG) methods for approximating second order elliptic partial differential equations (PDE).
Thomas Lewis, Aaron Rapp, Yi Zhang
doaj   +1 more source

Numerical analysis of the neutron multigroup $SP_N$ equations

open access: yesComptes Rendus. Mathématique, 2021
The multigroup neutron $SP_N$ equations, which are an approximation of the neutron transport equation, are used to model nuclear reactor cores. In their steady state, these equations can be written as a source problem or an eigenvalue problem.
Jamelot, Erell, Madiot, François
doaj   +1 more source

A Dimension Splitting-Interpolating Moving Least Squares (DS-IMLS) Method with Nonsingular Weight Functions

open access: yesMathematics, 2021
By introducing the dimension splitting method (DSM) into the improved interpolating moving least-squares (IMLS) method with nonsingular weight function, a dimension splitting–interpolating moving least squares (DS-IMLS) method is first proposed.
Jufeng Wang, Fengxin Sun, Rongjun Cheng
doaj   +1 more source

A comparison between the improved element-free Galerkin method and the element-free Galerkin method for 2D potential and elasticity problems

open access: yesComputer Assisted Methods in Engineering and Science, 2017
In this paper, a comparison between the improved element-free Galerkin (IEFG) method, based on the improved moving least square (IMLS) approximation, and the element-free Galerkin (EFG) method, based on the moving least square (MLS) approximation, is ...
Imen Debbabi   +2 more
doaj   +1 more source

Generalized Multiscale Finite Element Method for Elastic Wave Propagation in the Frequency Domain

open access: yesComputation, 2020
In this work, we consider elastic wave propagation in fractured media. The mathematical model is described by the Helmholtz problem related to wave propagation with specific interface conditions (Linear Slip Model, LSM) on the fracture in the frequency ...
Uygulana Gavrilieva   +2 more
doaj   +1 more source

Global well-posedness of solutions to a class of heat equation under dynamical type boundary conditions [PDF]

open access: yesArab Journal of Mathematical Sciences
PurposeBy employing the Galerkin approximation and a family of potential wells, we establish the existence of a global solution and finite-time blow-up under certain suitable conditions. Additionally, we provide results concerning the asymptotic behavior
Mahmoud El Ahmadi   +2 more
doaj   +1 more source

The Improved Element-Free Galerkin Method for 3D Steady Convection-Diffusion-Reaction Problems with Variable Coefficients

open access: yesMathematics, 2023
In order to obtain the numerical results of 3D convection-diffusion-reaction problems with variable coefficients efficiently, we select the improved element-free Galerkin (IEFG) method instead of the traditional element-free Galerkin (EFG) method by ...
Heng Cheng, Zebin Xing, Yan Liu
doaj   +1 more source

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