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In this paper, both semidiscrete and fully discrete finite element methods are analyzed for the penalized two-dimensional unsteady Navier-Stokes equations with nonsmooth initial data. First order backward Euler method is applied for the…

数值分析 · 数学 2026-04-16 Bikram Bir , Deepjyoti Goswami , Amiya K. Pani

We present a continuous and a discontinuous linear Finite Element method based on a predictor-corrector scheme for the numerical approximation of the Ericksen-Leslie equations, a model for nematic liquid crystal flow including a non-convex…

数值分析 · 数学 2025-02-13 Maximilian E. V. Reiter

This paper concerns a posteriori error analysis for the streamline diffusion (SD) finite element method for the one and one-half dimensional relativistic Vlasov-Maxwell system. The SD scheme yields a weak formulation, that corresponds to an…

数值分析 · 数学 2016-12-23 Mohammad Asadzadeh , Christoffer Standar

Multiscale finite element methods for 2D/1D problems have been studied in this work to demonstrate their excellent ability to solve real-world problems. These methods are much more efficient than conventional 3D finite element methods and…

数值分析 · 数学 2023-04-14 Karl Hollaus , Markus Schöbinger

This paper is concerned with mixed finite element method (FEM) for solving the two-dimensional, nonlinear fourth-order active fluid equations. By introducing an auxiliary variable $w=-\Delta u$, the original fourth problem is transformed…

数值分析 · 数学 2025-07-30 Nan Zheng , Xu Guo , Wenlong Pei , Wenju Zhao

We propose and analyze a general framework for space-time finite element methods that is based on least-squares finite element methods for solving a first-order reformulation of the thick parabolic obstacle problem. Discretizations based on…

The paper addresses an error analysis of an Eulerian finite element method used for solving a linearized Navier--Stokes problem in a time-dependent domain. In this study, the domain's evolution is assumed to be known and independent of the…

数值分析 · 数学 2024-08-26 Michael Neilan , Maxim Olshanskii

In this paper, a backward Euler method combined with finite element discretization in spatial direction is discussed for the equations of motion arising in the $2D$ Oldroyd model of viscoelastic fluids of order one with the forcing term…

数值分析 · 数学 2026-04-16 Bikram Bir , Deepjyoti Goswami , Amiya K. Pani

A stabilized conforming mixed finite element method for the three-field (displacement, fluid flux and pressure) poroelasticity problem is developed and analyzed. We use the lowest possible approximation order, namely piecewise constant…

数值分析 · 数学 2016-09-23 Lorenz Berger , Rafel Bordas , David Kay , Simon Tavener

This paper presents an innovative continuous linear finite element approach to effectively solve biharmonic problems on surfaces. The key idea behind this method lies in the strategic utilization of a surface gradient recovery operator to…

数值分析 · 数学 2024-04-30 Ying Cai , Hailong Guo , Zhimin Zhang

In this paper, we propose and analyze a temporally second-order accurate, fully discrete finite element method for the magnetohydrodynamic (MHD) equations. A modified Crank--Nicolson method is used to discretize the model and appropriate…

数值分析 · 数学 2021-08-13 Cheng Wang , Jilu Wang , Zeyu Xia , Liwei Xu

In this work, we develop and analyze a higher-order finite element method for the multidimensional fragmentation equation. To the best of our knowledge, this is the first study to establish a rigorous, conforming finite element framework…

数值分析 · 数学 2026-04-10 Arushi , Naresh Kumar

Numerically solving parabolic equations with quasiperiodic coefficients is a significant challenge due to the potential formation of space-filling quasiperiodic structures that lack translational symmetry or decay. In this paper, we…

数值分析 · 数学 2024-12-30 Kai Jiang , Meng Li , Juan Zhang , Lei Zhang

This article presents a high order conservative flux optimization (CFO) finite element method for the elliptic diffusion equations. The numerical scheme is based on the classical Galerkin finite element method enhanced by a flux…

数值分析 · 数学 2019-11-13 Yujie Liu , Yue Feng , Ran Zhang

Reservoir simulators utilize numerical techniques to solve the governing equations of fluid flow in porous media and they are essential tool for oil and gas fields development. In practical reservoir simulation, the finite difference method…

流体动力学 · 物理学 2023-11-14 Taofik H. Nassan , Mohd Amro

In this work, we develop variational formulations of Petrov-Galerkin type for one-dimensional fractional boundary value problems involving either a Riemann-Liouville or Caputo derivative of order $\alpha\in(3/2, 2)$ in the leading term and…

数值分析 · 数学 2015-12-18 Bangti Jin , Raytcho Lazarov , Zhi Zhou

We construct a finite element method for the numerical solution of a fractional porous medium equation on a bounded open Lipschitz polytopal domain $\Omega \subset \mathbb{R}^{d}$, where $d = 2$ or $3$. The pressure in the model is defined…

数值分析 · 数学 2025-09-03 José A. Carrillo , Stefano Fronzoni , Endre Süli

This paper is concerned with fully discrete mixed finite element approximations of the time-dependent stochastic Stokes equations with multiplicative noise. A prototypical method, which comprises of the Euler-Maruyama scheme for time…

数值分析 · 数学 2020-04-28 Xiaobing Feng , Hailong Qiu

In this paper the projection hybrid FV/FE method presented in Busto et al. 2014 is extended to account for species transport equations. Furthermore, turbulent regimes are also considered thanks to the $k-\varepsilon$ model. Regarding the…

In this paper the capabilities of the turbulence-resolving Eulerian-Eulerian two-phase flow model to predict the suspension of mono-dispersed finite-sized solid particles in a boundary layer flow are investigated. For heavier-than-fluid…

流体动力学 · 物理学 2021-03-08 Antoine Mathieu , Julien Chauchat , Cyrille Bonamy , Guillaume Balarac , Tian-Jian Hsu