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This work examines the controllability of planar incompressible ideal magnetohydrodynamics (MHD). Interior controls are obtained for problems posed in doubly-connected regions; simply-connected configurations are driven by boundary…

偏微分方程分析 · 数学 2025-08-13 Manuel Rissel

We address the problem of controllability of the MHD system in a rectangular domain with a control prescribed on the side boundary. We identify a necessary and sufficient condition on the data to be null controllable, i.e., can be driven to…

偏微分方程分析 · 数学 2021-08-30 Igor Kukavica , Matthew Novack , Vlad Vicol

We study the small-time global approximate controllability for incompressible magnetohydrodynamic (MHD) flows in smoothly bounded two- or three-dimensional domains. The controls act on arbitrary nonempty open portions of each connected…

偏微分方程分析 · 数学 2025-11-07 Manuel Rissel , Ya-Guang Wang

We prove the incompressible limit of compressible ideal magnetohydrodynamic(MHD) flows in a reference domain where the magnetic field is tangential to the boundary. Unlike the case of transversal magnetic fields, the linearized problem of…

偏微分方程分析 · 数学 2025-02-10 Jiawei Wang , Junyan Zhang

We consider the initial-boundary value problem in the halfspace for the system of equations of ideal Magneto-Hydrodynamics with a perfectly conducting wall boundary condition. We show the convergence of solutions to the solution of the…

偏微分方程分析 · 数学 2024-07-04 Paolo Secchi

In this article, we study the strong well-posedness, stability and optimal control of an incompressible magneto-viscoelastic fluid model in two dimensions. The model consists of an incompressible Navier--Stokes equation for the velocity…

偏微分方程分析 · 数学 2021-08-09 Harald Garcke , Patrik Knopf , Sourav Mitra , Anja Schlömerkemper

The magnetohydrodynamic current-vortex sheet is a free boundary problem involving a moving free surface separating two plasma regions. We prove the global nonlinear stability of current-vortex sheet in the two dimensional ideal…

偏微分方程分析 · 数学 2024-10-29 Yuan Cai , Zhen Lei

This paper concerns the viscous and non-resistive MHD systems which govern the motion of electrically conducting fluids interacting with magnetic fields. We consider an initial-boundary value problem for both compressible and…

偏微分方程分析 · 数学 2017-11-17 Zhong Tan , Yanjin Wang

We prove the local well-posedness of the 3D free-boundary incompressible ideal magnetohydrodynamics (MHD) equations with surface tension, which describe the motion of a perfect conducting fluid in an electromagnetic field. We adapt the…

偏微分方程分析 · 数学 2023-12-13 Xumin Gu , Chenyun Luo , Junyan Zhang

This paper investigates the exact controllability problem for multi-dimensional stochastic first-order symmetric hyperbolic systems with control inputs acting in two distinct ways: an internal control applied to the diffusion term and a…

最优化与控制 · 数学 2026-01-27 Zengyu Li , Qi Lü , Yu Wang , Haitian Yang

In this article, we consider a magnetohydrodynamics system for incompressible flow in a three-dimensional bounded domain. Firstly, we give the stability results for our inverse coefficients problem. Secondly, we establish and prove two…

偏微分方程分析 · 数学 2018-06-21 Xinchi Huang

We study controllability issues for the 2D Euler and Navier-Stokes (NS) systems under periodic boundary conditions. These systems describe motion of homogeneous ideal or viscous incompressible fluid on a two-dimensional torus…

最优化与控制 · 数学 2009-11-11 Andrey Agrachev , Andrey Sarychev

In this paper, motivated by the study of optimal control problems for infinite dimensional systems with endpoint state constraints, we introduce the notion of finite codimensional (exact/approximate) controllability. Some equivalent…

最优化与控制 · 数学 2018-10-03 Xu Liu , Qi Lü , Xu Zhang

We study a non-local hydrodynamic system with control. First we characterize the control dynamics as a sub-optimal approximation to the optimal control problem constrained to the evolution of the pressureless Euler alignment system. We then…

偏微分方程分析 · 数学 2018-02-01 Giacomo Albi , Young-Pil Choi , Axel-Stefan Haeck

The exhaustive classification of stationary incompressible flows with constant total pressure of ideal infinitely electrically conducting fluid is given. By introduction of curvilinear coordinates based on streamlines and magnetic lines of…

流体动力学 · 物理学 2015-06-03 S. V. Golovin , M. K. Krutikov

The paper is devoted to the controllability problem for 3D compressible Euler system. The control is a finite-dimensional external force acting only on the velocity equation. We show that the velocity and density of the fluid are…

偏微分方程分析 · 数学 2010-12-10 Hayk Nersisyan

We consider the three-dimensional incompressible magnetohydrodynamics (MHD) equations in a bounded domain with small volume and free moving surface boundary. We establish a priori estimate for solutions with minimal regularity assumptions…

偏微分方程分析 · 数学 2022-07-05 Chenyun Luo , Junyan Zhang

In this paper, we study the control system associated with the incompressible 3D Euler system. We show that the velocity field and pressure of the fluid are exactly controllable in projections by the same finite-dimensional control.…

数学物理 · 物理学 2008-10-21 Hayk Nersisyan

This paper deals with the controllability of linear one-dimensional hyperbolic systems. Reformulating the problem in terms of linear difference equations and making use of infinite-dimensional realization theory, we obtain both necessary…

最优化与控制 · 数学 2024-05-14 Yacine Chitour , Sébastien Fueyo , Guilherme Mazanti , Mario Sigalotti

We are concerned with the global existence of finite energy weak solutions to 3D density-dependent magnetohydrodynamics (MHD) system with Hall-effect set in a general smooth bounded domain. The perfectly conducting wall boundary condition…

偏微分方程分析 · 数学 2021-09-01 Jin Tan
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