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In this paper, we propose a linear and monolithic finite element method for the approximation of an incompressible viscous fluid interacting with an elastic and deforming plate. We use the arbitrary Lagrangian-Eulerian (ALE) approach that…

数值分析 · 数学 2023-01-13 Sebastian Schwarzacher , Bangwei She , Karel Tuma

This paper aims to study the convergence of adaptive finite element method for control constrained elliptic optimal control problems under $L^2$-norm. We prove the contraction property and quasi-optimal complexity for the $L^2$-norm errors…

数值分析 · 数学 2016-11-16 Wei Gong , Ningning Yan , Zhaojie Zhou

The paper studies a method for solving elliptic partial differential equations posed on hypersurfaces in $\mathbb{R}^N$, $N=2,3$. The method allows a surface to be given implicitly as a zero level of a level set function. A surface equation…

数值分析 · 数学 2015-01-16 Maxim A. Olshanskii , Danil Safin

This work is devoted to the development and analysis of a linearization algorithm for microscopic elliptic equations, with scaled degenerate production, posed in a perforated medium and constrained by the homogeneous Neumann-Dirichlet…

数值分析 · 数学 2020-08-11 Anh-Khoa Vo , Ekeoma Rowland Ijioma , Nhu-Ngoc Nguyen

In this paper, the finite element Galerkin method is applied to the equations of motion arising in the Kelvin-Voigt viscoelastic fluid flow model, when the forcing function is in $L^{\infty}(L^2)$. Some a priori estimates for the exact…

数值分析 · 数学 2015-12-01 Ambit K. Pany , Saumya Bajpai , Amiya K. Pani

We consider the least-squares finite element method (lsfem) for systems of nonlinear ordinary differential equations and establish an optimal error estimate for this method when piecewise linear elements are used. The main assumptions are…

数值分析 · 数学 2021-10-01 Matthias Chung , Justin Krueger , Honghu Liu

We present and analyze three distinct semi-discrete schemes for solving nonlocal geometric flows incorporating perimeter terms. These schemes are based on the finite difference method, the finite element method, and the finite element…

数值分析 · 数学 2024-05-14 Jiang Wei , Su Chunmei , Zhang Ganghui

In this paper, we study both elliptic and parabolic equations in non-divergence form with singular degenerate coefficients. Weighted and mixed-norm $L_p$-estimates and solvability are established under some suitable partially weighted BMO…

偏微分方程分析 · 数学 2018-11-21 Hongjie Dong , Tuoc Phan

We revise the structure-preserving finite element method in [K. Hu, Y. MA and J. Xu. (2017) Stable finite element methods preserving $\nabla \cdot \mathbf{B}=0$ exactly for MHD models. Numer. Math.,135, 371-396]. The revised method is…

数值分析 · 数学 2020-03-24 Weifeng Qiu , Ke Shi

We introduce and analyze a new mixed finite element method with reduced symmetry for the standard linear model in viscoelasticity. Following a previous approach employed for linear elastodynamics, the present problem is formulated as a…

数值分析 · 数学 2020-05-05 Gabriel N. Gatica , Antonio Márquez , Salim Meddahi

In this contribution, we provide convergence rates for a finite volume scheme of a stochastic non-linear parabolic equation with multiplicative Lipschitz noise and homogeneous Neumann boundary conditions. More precisely, we give an error…

数值分析 · 数学 2025-12-22 Kavin Rajasekaran , Niklas Sapountzoglou

We consider Galerkin finite element methods for semilinear stochastic partial differential equations (SPDEs) with multiplicative noise and Lipschitz continuous nonlinearities. We analyze the strong error of convergence for spatially…

数值分析 · 数学 2014-11-26 Raphael Kruse

This paper is devoted to the complete convergence study of the finite-element approximation of Maxwell's equations in the case where the magnetic permeability is constant. Standard linear finite elements for the space discretization are…

数值分析 · 数学 2020-07-06 Larisa Beilina , Vitoriano Ruas

This paper develops and analyzes a semi-discrete and a fully discrete finite element method for a one-dimensional quasilinear parabolic stochastic partial differential equation (SPDE) which describes the stochastic mean curvature flow for…

数值分析 · 数学 2013-03-26 Xiaobing Feng , Yukun Li , Andreas Prohl

In this work we consider the two dimensional instationary Navier-Stokes equations with homogeneous Dirichlet/no-slip boundary conditions. We show error estimates for the fully discrete problem, where a discontinuous Galerkin method in time…

数值分析 · 数学 2026-05-20 Boris Vexler , Jakob Wagner

In this paper we propose, analyze, and test numerically a pressure-robust stabilized finite element for a linearized problem in incompressible fluid mechanics, namely, the steady Oseen equation with low viscosity. Stabilization terms are…

数值分析 · 数学 2022-11-10 Gabriel R. Barrenechea , Erik Burman , Ernesto Cáceres , Johnny Guzmán

We show that in one space dimension Lipschitz solutions of extremal surface equations are equivalent to entropy solutions in $L^\infty(\R)$ of a non-strictly hyperbolic system of conservation laws. We obtain an explicit representation…

数学物理 · 物理学 2015-05-20 Yue-Jun Peng , Yong-Fu Yang

We analyze the conforming approximation of the time-harmonic Maxwell's equations using N\'ed\'elec (edge) finite elements. We prove that the approximation is asymptotically optimal, i.e., the approximation error in the energy norm is…

数值分析 · 数学 2023-09-26 T. Chaumont-Frelet , A. Ern

The main goal of the paper is to show new stability and localization results for the finite element solution of the Stokes system in $W^{1,\infty}$ and $L^{\infty}$ norms under standard assumptions on the finite element spaces on…

数值分析 · 数学 2019-07-17 Niklas Behringer , Dmitriy Leykekhman , Boris Vexler

In this paper, we study a numerical method for the solution of partial differential equations on evolving surfaces. The numerical method is built on the stabilized trace finite element method (TraceFEM) for the spatial discretization and…

数值分析 · 数学 2018-03-23 Christoph Lehrenfeld , Maxim A. Olshanskii , Xianmin Xu