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In this paper, the boundary flex control problem of non stationary equation governing the coupled mass and heat flow of a viscous incompressible fluid in a generalized Boussinesq approximation by assuming that viscosity and heat…

偏微分方程分析 · 数学 2012-07-18 Gol Kim

We study the long-time dynamics of a bulk-surface convective Cahn--Hilliard system describing phase separation processes with bulk-surface interaction. The presence of convection terms leads to a non-autonomous dynamical system and prevents…

偏微分方程分析 · 数学 2026-03-12 Patrik Knopf , Andrea Poiatti , Jonas Stange , Sema Yayla

We prove existence and regularity for the solutions to a Cahn-Hilliard system describing the phenomenon of phase separation for a material contained in a bounded and regular domain. Since the first equation of the system is perturbed by the…

偏微分方程分析 · 数学 2020-05-05 Michele Colturato

A common paradigm in phase-field models with singular potentials is that global-in-time weak solutions converge to a single equilibrium only after undergoing asymptotic regularization. However, in arXiv:2510.17296 we introduced a novel…

偏微分方程分析 · 数学 2026-04-01 Maurizio Grasselli , Andrea Poiatti

We consider the Navier--Stokes equations for compressible heat-conducting ideal polytropic gases in a bounded annular domain when the viscosity and thermal conductivity coefficients are general smooth functions of temperature. A…

偏微分方程分析 · 数学 2020-09-24 Ling Wan , Tao Wang

We obtain new oscillation and gradient bounds for the viscosity solutions of fully nonlinear degenerate elliptic equations where the Hamiltonian is a sum of a sublinear and a superlinear part in the sense of Barles and Souganidis (2001). We…

偏微分方程分析 · 数学 2015-05-22 Olivier Ley , Vinh Duc Nguyen

We present a general approach to prove existence of solutions for optimal control problems not based on typical convexity conditions which quite often are very hard, if not impossible, to check. By taking advantage of several relaxations of…

最优化与控制 · 数学 2014-01-21 Pablo Pedregal , Jorge Tiago

The Navier-Stokes-Cahn-Hilliard (NSCH) system governs the diffuse-interface dynamics of two incompressible and immiscible fluids. We consider a relaxation approximation of the NSCH system that is composed by a system of first-order…

数值分析 · 数学 2026-01-27 Jan Giesselmann , Jens Keim , Fabio Leotta , Christian Rohde

In this paper, we show the incompressible and vanishing vertical viscosity limits for the strong solutions to the isentropic compressible Navier-Stokes system with anistropic dissipation, in a domain with Dirichlet boundary conditions in…

偏微分方程分析 · 数学 2025-01-10 Nader Masmoudi , Changzhen Sun , Chao Wang , Zhifei Zhang

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

We present an algorithm for robust model predictive control with consideration of uncertainty and safety constraints. Our framework considers a nonlinear dynamical system subject to disturbances from an unknown but bounded uncertainty set.…

最优化与控制 · 数学 2021-04-23 Dongchan Lee , Konstantin Turitsyn , Jean-Jacques Slotine

We give a new perspective on the existence of viscosity solutions for a stationary and a time-dependent first-order Hamilton-Jacobi equation. Following recent comparison principles, we work in a framework in which we consider a subsolution…

偏微分方程分析 · 数学 2025-11-25 Serena Della Corte , Richard C. Kraaij

We consider a steady-state heat conduction problem in a multidimensional bounded domain Omega for the Poisson equation with constant internal energy g and mixed boundary conditions given by a constant temperature b in the portion Gamma_1 of…

最优化与控制 · 数学 2020-04-06 Julieta Bollati , Claudia M. Gariboldi , Domingo A. Tarzia

We consider a class of bulk-surface coupled Cahn-Hilliard systems in a smooth, bounded domain $\Omega\subset\mathbb{R}^{d}$ $(d\in\{2,3\})$, where the trace value of the bulk phase variable is connected to the surface phase variable via a…

偏微分方程分析 · 数学 2024-07-03 Maoyin Lv , Hao Wu

The solutions to surface evolution problems like mean curvature flow can be expressed as value functions of suitable stochastic control problems, obtained as limit of a family of regularised control problems. The control-theoretical…

偏微分方程分析 · 数学 2020-05-22 Nicolas Dirr , Federica Dragoni , Raffaele Grande

The Cahn-Hilliard system has been used to describe a wide number of phase separation processes, from co-polymer systems to lipid membranes. In this work the convergence properties of a closest-point based scheme is investigated. In place of…

数值分析 · 数学 2017-02-28 Prerna Gera , David Salac

The paper treats the problem of optimal distributed control of a Cahn-Hilliard-Oono system in $\mathbb{R}^d$, $1\leq d\leq 3$, with the control located in the mass term and admitting general potentials that include both the case of a…

偏微分方程分析 · 数学 2022-06-02 Pierluigi Colli , Gianni Gilardi , Elisabetta Rocca , Jürgen Sprekels

We consider the finite-time stabilization of homogeneous quasilinear hyperbolic systems with one side controls and with nonlinear boundary condition at the other side. We present time-independent feedbacks leading to the finite-time…

最优化与控制 · 数学 2020-05-28 Jean-Michel Coron , Hoai-Minh Nguyen

We study the motion of a rigid body within a compressible, isentropic, and viscous fluid contained in a fixed bounded domain $\Omega \subset \mathbb{R}^3$. The fluid's behavior is described by the Navier-Stokes equations, while the motion…

偏微分方程分析 · 数学 2024-08-15 Šimon Axmann , Šárka Nečasová , Ana Radošević

Here we consider the nonlocal Cahn-Hilliard equation with constant mobility in a bounded domain. We prove that the associated dynamical system has an exponential attractor, provided that the potential is regular. In order to do that a…

偏微分方程分析 · 数学 2013-05-07 Ciprian G. Gal , Maurizio Grasselli