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In this paper we study optimal control problem for non local Cahn-Hilliard-Brinkman system which models phase separation of binary fluids in porous media. We consider the system in two dimensional bounded domain with regular potential. We…

偏微分方程分析 · 数学 2019-11-11 Sheetal Dharmatti , Mahendranath PL N

In this work, the MMC-TDGL equation, a stochastic Cahn-Hilliard equation is solved numerically by using the finite difference method in combination with a convex splitting technique of the energy functional. For the non-stochastic case, we…

数值分析 · 数学 2016-08-24 Xiao Li , Zhonghua Qiao , Hui Zhang

A Cahn-Hilliard-Allen-Cahn phase-field model coupled with a heat transfer equation, particularly with full non-diagonal mobility matrices, is studied. After reformulating the problem w.r.t. the inverse of temperature, we proposed and…

We present extensive results from 2-dimensional simulations of phase separation kinetics in a model with order-parameter dependent mobility. We find that the time-dependent structure factor exhibits dynamical scaling and the scaling…

凝聚态物理 · 物理学 2009-10-30 Sanjay Puri , Alan Bray , Joel Lebowitz

The first aim of this paper is to examine existence, uniqueness and regularity for the Cahn-Hilliard-Cook (CHC) equation in space dimension $d\leq 3$. By applying a spectral Galerkin method to the infinite dimensional equation, we elaborate…

数值分析 · 数学 2022-04-05 Ruisheng Qi , Meng Cai , Xiaojie Wang

P. Galenko et al. proposed a modified Cahn-Hilliard equation to model rapid spinodal decomposition in non-equilibrium phase separation processes. This equation contains an inertial term which causes the loss of any regularizing effect on…

偏微分方程分析 · 数学 2008-04-08 Maurizio Grasselli , Giulio Schimperna , Sergey Zelik

The non-local degenerate Cahn-Hilliard equation is derived from the Vlasov equation with long-range attraction. We study the local limit as the delocalization parameter converges to 0. The difficulty arises from the degeneracy which…

偏微分方程分析 · 数学 2023-06-13 Charles Elbar , Benoît Perthame , Jakub Skrzeczkowski

We prove global existence and uniqueness of solutions to a Cahn-Hilliard system with nonlinear viscosity terms and nonlinear dynamic boundary conditions. The problem is highly nonlinear, characterized by four nonlinearities and two separate…

偏微分方程分析 · 数学 2020-01-07 Luca Scarpa

The process of phase separation of binary systems is described by the Cahn-Hilliard equation. The main objective of this article is to give a classification on the dynamic phase transitions for binary systems using either the classical…

数学物理 · 物理学 2009-03-12 Tian Ma , Shouhong Wang

In the present work, we address a class of Cahn-Hilliard equations characterized by a nonlinear diffusive dynamics and possibly containing an additional sixth order term. This model describes the separation properties of oil-water mixtures,…

偏微分方程分析 · 数学 2012-06-26 Giulio Schimperna , Irena Pawlow

The mixed form of the Cahn-Hilliard equations is discretized by the hybridizable discontinuous Galerkin method. For any chemical energy density, existence and uniqueness of the numerical solution is obtained. The scheme is proved to be…

数值分析 · 数学 2023-02-28 Keegan L. A. Kirk , Rami Masi , Beatrice Riviere

We consider a system which consists of a Cahn-Hilliard equation coupled with a Cahn-Hilliard-Oono equation in a bounded domain of $\mathbb{R}^d$, $d = 2, 3$. This system accounts for macrophase and microphase separation in a polymer mixture…

偏微分方程分析 · 数学 2022-03-25 Andrea Di Primio , Maurizio Grasselli

We study a general Navier-Stokes-Cahn-Hilliard-Boussinesq system that describes the motion of a mixture of two incompressible Newtonian fluids with thermo-induced Marangoni effects. The Cahn-Hilliard dynamics of the binary mixture is…

偏微分方程分析 · 数学 2024-08-13 Lingxi Chen

A typical phase field approach for describing phase separation and coarsening phenomena in alloys is the Cahn-Hilliard model. This model has been generalized to the so-called Cahn-Larch\'e system by combining it with elasticity to capture…

偏微分方程分析 · 数学 2015-02-23 Christian Heinemann , Christiane Kraus

We prove existence of solutions and study the nonlocal-to-local asymptotics for nonlocal, convective, Cahn-Hilliard equations in the case of a W^{1,1} convolution kernel and under homogeneous Neumann conditions. Any type of potential,…

偏微分方程分析 · 数学 2021-09-17 Elisa Davoli , Luca Scarpa , Lara Trussardi

We analyze a diffuse interface model that describes the dynamics of incompressible two-phase flows with chemotaxis effect. The PDE system couples a Navier-Stokes equation for the fluid velocity, a convective Cahn-Hilliard equation for the…

偏微分方程分析 · 数学 2020-02-04 Jingning He

We propose a hydridizable discontinuous Galerkin (HDG) method for solving the Cahn-Hilliard equation. The temporal discretization can be based on either the backward Euler method or the convex-splitting method. We show that the fully…

数值分析 · 数学 2024-12-20 Gang Chen , Daozhi Han , John Singler , Yangwen Zhang

A phase field model for tumour growth is introduced that is based on a Brinkman law for convective velocity fields. The model couples a convective Cahn-Hilliard equation for the evolution of the tumour to a reaction-diffusion-advection…

偏微分方程分析 · 数学 2021-09-07 Matthias Ebenbeck , Harald Garcke , Robert Nürnberg

We consider a class of six-order Cahn-Hilliard equations with logarithmic type potential. This system is closely connected with some important phase-field models relevant in different applications, for instance, the functionalized…

偏微分方程分析 · 数学 2023-07-28 Giulio Schimperna , Hao Wu

We consider a diffuse interface model for tumor growth consisting of a Cahn--Hilliard equation with source terms coupled to a reaction-diffusion equation, which models a tumor growing in the presence of a nutrient species and surrounded by…

偏微分方程分析 · 数学 2017-05-04 Harald Garcke , Kei Fong Lam
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