Optimal boundary control for the Cahn-Hilliard-Navier-Stokes Equations
Abstract
In this work, we study an optimal boundary control problem for a Cahn - Hilliard -Navier-Stokes (CHNS) system in a two dimensional bounded domain. The CHNS system consists of a Navier-Stokes equation governing the fluid velocity field coupled with a convective Cahn - Hilliard equation for the relative concentration of the fluids. An optimal control problem is formulated as the minimization of a cost functional subject to the controlled CHNS system where the control acts on the boundary of the Navier-Stokes equations. We first prove that there exists an optimal boundary control. Then we establish that the control-to-state operator is Frechet differentiable and derive first-order necessary optimality conditions in terms of a variational inequality involving the adjoint system.
Cite
@article{arxiv.2305.02501,
title = {Optimal boundary control for the Cahn-Hilliard-Navier-Stokes Equations},
author = {Manika Bag and Tania Biswas and Sheetal Dharmatti},
journal= {arXiv preprint arXiv:2305.02501},
year = {2024}
}