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Matrix acidization simulation is a challenging task in the study of flows in porous media, due to the changing porosity in the procedure. The improved DBF framework is one model to do this simulation, and its numerical scheme discretises…

计算物理 · 物理学 2024-06-12 Yuanqing Wu , Jisheng Kou , Yu-Shu Wu , Shuyu Sun , Yilin Xia

This paper presents a first-order convex splitting hybridizable/embedded discontinuous Galerkin method for the phase field crystal equation written in mixed form. Since the sixth-order phase field crystal equation is rewritten as a…

数值分析 · 数学 2026-03-03 Giselle Saylor , Tamas L. Horvath , Natasha S. Sharma

We consider wave propagation in a coupled fluid-solid region, separated by a static but possibly curved interface. The wave propagation is modeled by the acoustic wave equation in terms of a velocity potential in the fluid, and the elastic…

数值分析 · 数学 2023-07-19 Daniel Appelö , Siyang Wang

We analyze the Ericksen--Leslie system equipped with the Oseen--Frank energy in three space dimensions. Recently, the author introduced the concept of dissipative solutions. These solutions show several advantages in comparison to the…

偏微分方程分析 · 数学 2020-01-07 Robert Lasarzik

In this paper, we are concerned with the structural stability of some steady subsonic solutions for Euler-Poisson system. A steady subsonic solution with subsonic background charge is proven to be structurally stable with respect to small…

偏微分方程分析 · 数学 2016-03-16 Shangkun Weng

The Swift-Hohenberg equation as a central nonlinear model in modern physics has a gradient flow structure. Here we introduce fully discrete discontinuous Galerkin (DG) schemes for a class of fourth order gradient flow problems, including…

数值分析 · 数学 2019-10-02 Hailiang Liu , Peimeng Yin

In this work, we consider the development of implicit explicit total variation diminishing (TVD) methods (also termed SSP: strong stability preserving) for the compressible isentropic Euler system in the low Mach number regime. The scheme…

In this paper, we consider the energy decay of a damped hyperbolic system of wave-wave type which is coupled through the velocities. We are interested in the asymptotic properties of the solutions of this system in the case of indirect…

最优化与控制 · 数学 2015-03-16 Fatiha Alabau-Boussouira , Zhiqiang Wang , Lixin Yu

A novel numerical scheme including time and spatial discretization is offered for coupled Cahn-Hilliard and Navier-Stokes governing equation sys-tem in this paper. Variable densities and viscosities are considered in the nu-merical scheme.…

计算物理 · 物理学 2018-05-25 Xiaoyu Feng , Jisheng Kou , Shuyu Sun

In this paper, we construct and analyze new first- and second-order implicit-explicit (IMEX) schemes for the unsteady Navier-Stokes-Darcy model to describe the coupled free flow-porous media system, which is based on the scalar auxiliary…

数值分析 · 数学 2024-05-21 Xinhui Wang , Xu Guo , Xiaoli Li

This is the second part of our error analysis of the stabilized Lagrange-Galerkin scheme applied to the Oseen-type Peterlin viscoelastic model. Our scheme is a combination of the method of characteristics and Brezzi-Pitk\"aranta's…

This study presents an efficient, accurate, effective and unconditionally stable time stepping scheme for the Darcy-Brinkman equations in double-diffusive convection. The stabilization within the proposed method uses the idea of stabilizing…

数值分析 · 数学 2018-04-10 Aytekin Çıbık , Medine Demir , Songul Kaya

This paper is concerned with the approximation of the compressible Euler equations supplemented with an arbitrary or tabulated equation of state. The proposed approximation technique is robust, formally second-order accurate in space,…

数值分析 · 数学 2023-02-22 Bennett Clayton , Jean-Luc Guermond , Matthias Maier , Bojan Popov , Eric J. Tovar

Entropy stabilization of the compressible Euler system is achieved by adapting the averages that are applied to the density and internal energy variables. The approach achieves non-linear robustness despite the use of simplified symmetric…

流体动力学 · 物理学 2026-05-21 Carlo De Michele , Ayaboe K. Edoh

We investigate the numerical approximation of the stochastic Allen--Cahn equation with multiplicative noise on a periodic domain. The considered scheme uses a recently proposed augmented variant of scalar auxiliary variable method for the…

数值分析 · 数学 2025-06-27 Stefan Metzger

This paper explores the exponential stability of two nonlinear wave equations coupled through their velocities. The analysis is divided into two main cases. First, we consider a system where one equation is damped, while the other…

偏微分方程分析 · 数学 2025-07-11 Alhabib Moumni , Cristina Pignotti , Jawad Salhi , Mouhcine Tilioua

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

We establish the global existence of weak martingale solutions to the simplified stochastic Ericksen--Leslie system modeling the nematic liquid crystal flow driven by Wiener-type noises on the two-dimensional bounded domains. The…

偏微分方程分析 · 数学 2020-11-19 Hengrong Du , Changyou Wang

We propose a decomposition method for solving a general class of linear-quadratic (LQ) McKean-Vlasov control problems involving conditional expectations and random coefficients, where the system dynamics are driven by two independent Wiener…

最优化与控制 · 数学 2026-04-15 Onésime Hounkpe , Dena Firoozi , Shuang Gao

Based on a discontinuous Galerkin method in the spatial directions and an improved implicit-explicit pressure-correction scheme in the temporal direction, this paper discusses a fully discrete scheme for the…

数值分析 · 数学 2026-05-01 Bikram Bir , Amiya K. Pani