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We study a stochastic phase-field model for tumor growth dynamics coupling a stochastic Cahn-Hilliard equation for the tumor phase parameter with a stochastic reaction-diffusion equation governing the nutrient proportion. We prove strong…

偏微分方程分析 · 数学 2021-01-19 Carlo Orrieri , Elisabetta Rocca , Luca Scarpa

This paper deals with an initial and boundary value problem for a system coupling equation and boundary condition both of Cahn-Hilliard type; an additional convective term with a forced velocity field, which could act as a control on the…

偏微分方程分析 · 数学 2017-04-20 Pierluigi Colli , Gianni Gilardi , Jürgen Sprekels

This paper treats a distributed optimal control problem for a tumor growth model of viscous Cahn--Hilliard type. The evolution of the tumor fraction is governed by a thermodynamic force induced by a double-well potential of logarithmic…

最优化与控制 · 数学 2023-06-14 Jürgen Sprekels , Fredi Tröltzsch

A Cahn-Hilliard equation with stochastic multiplicative noise and a random convection term is considered. The model describes isothermal phase-separation occurring in a moving fluid, and accounts for the randomness appearing at the…

偏微分方程分析 · 数学 2021-04-21 Luca Scarpa

This article is concerned with stochastic control problems for backward doubly stochastic differential equations of mean-field type, where the coefficient functions depend on the joint distribution of the state process and the control…

概率论 · 数学 2022-05-26 Jian Song , Meng Wang

This work is a continuation of the previous one in [{\it Optimization} (2023)], where the existence of optimal solutions and first-order necessary optimality conditions in both Pontryagin's maximum principle form and the variational form…

最优化与控制 · 数学 2024-10-01 Cung The Anh , Nguyen Hai Ha Giang

In this work, we investigate optimal control of a Brinkman equation couple with sixth-order Cahn-Hilliard equation. The Cahn-Hilliard equation is endowed with a source term accounting for mass exchange and the velocity equation contains a…

最优化与控制 · 数学 2025-12-09 Manika Bag

In this note, we study the optimal control of a nonisothermal phase field system of Cahn-Hilliard type that constitutes an extension of the classical Caginalp model for nonisothermal phase transitions with a conserved order parameter. It…

最优化与控制 · 数学 2023-03-24 Pierluigi Colli , Gianni Gilardi , Andrea Signori , Jürgen Sprekels

Stochastic optimal control problems with constraints on the probability distribution of the final output are considered. Necessary conditions for optimality in the form of a coupled system of partial differential equations involving a…

最优化与控制 · 数学 2022-03-10 Samuel Daudin

In this work, we study the control constrained distributed optimal control of a stationary doubly diffusive flow model. For the control problem, we use a well-posedness analysis based on minimal assumptions on data and domain. We show the…

最优化与控制 · 数学 2025-06-13 Jai Tushar , Arbaz Khan , Manil T. Mohan

We consider a stochastic control problem where the set of strict (classical) controls is not necessarily convex and the the variable control has two components, the first being absolutely continuous and the second singular. The system is…

概率论 · 数学 2008-12-20 Seid Bahlali

In their recent work `Well-posedness, regularity and asymptotic analyses for a fractional phase field system' (Asymptot. Anal. 114 (2019), 93-128; see also the preprint arXiv:1806.04625), two of the present authors have studied phase field…

偏微分方程分析 · 数学 2020-05-28 Pierluigi Colli , Gianni Gilardi , Jürgen Sprekels

We propose a general control framework for two-phase flows with variable densities in the diffuse interface formulation, where the distribution of the fluid components is described by a phase field. The flow is governed by the diffuse…

最优化与控制 · 数学 2016-12-08 Harald Garcke , Michael Hinze , Christian Kahle

In this work, we address some optimal control problems related to the evolution of two isothermal, incompressible, immisible fluids in a two dimensional bounded domain. A distributed optimal control problem is formulated as the minimization…

最优化与控制 · 数学 2019-02-19 Tania Biswas , Sheetal Dharmatti , Manil T Mohan

We study a diffusion model of phase field type, consisting of a system of two partial differential equations encoding the balances of microforces and microenergy; the two unknowns are the order parameter and the chemical potential. By a…

偏微分方程分析 · 数学 2011-03-24 Pierluigi Colli , Gianni Gilardi , Paolo Podio-Guidugli , Juergen Sprekels

In this paper, we consider a class of optimal control problems for a one-dimensional time-discrete constrained quasilinear diffusion state-systems of singular Allen--Cahn types and its regularized approximating problems. We note that the…

最优化与控制 · 数学 2021-09-28 Shodai Kubota

In this paper, we study an optimal control problem for a two-dimensional Cahn-Hilliard-Darcy system with mass sources that arises in the modeling of tumor growth. The aim is to monitor the tumor fraction in a finite time interval in such a…

偏微分方程分析 · 数学 2023-07-28 Juergen Sprekels , Hao Wu

This paper is concerned with a constrained stochastic linear-quadratic optimal control problem, in which the terminal state is fixed and the initial state is constrained to lie in a stochastic linear manifold. The controllability of…

最优化与控制 · 数学 2019-06-11 Xiuchun Bi , Jingrui Sun , Jie Xiong

In this paper, we study an optimal control problem for a macroscopic mechanical tumour model based on the phase field approach. The model couples a Cahn--Hilliard type equation to a system of linear elasticity and a reaction-diffusion…

最优化与控制 · 数学 2021-04-21 Harald Garcke , Kei Fong Lam , Andrea Signori

The paper arXiv:1804.11290 contains well-posedness and regularity results for a system of evolutionary operator equations having the structure of a Cahn-Hilliard system. The operators appearing in the system equations were fractional…

偏微分方程分析 · 数学 2018-12-17 Pierluigi Colli , Gianni Gilardi , Jürgen Sprekels