Korean J. Math.  Vol 23, No 2 (2015)  pp.293-312
DOI: https://doi.org/10.11568/kjm.2015.23.2.293

A boundary control problem for vorticity minimization in time-dependent 2D Navier-Stokes equations

Hongchul Kim

Abstract


We deal with a boundary control problem for the vorticity minimization,   in which the flow is governed by the time-dependent two dimensional incompressible Navier-Stokes equations. We derive a mathematical formulation and a process for an appropriate control along the portion of the boundary to minimize the vorticity motion due to the flow in the fluid domain. After showing the existence of an optimal solution, we derive the optimality system for which optimal solutions may be determined. The differentiability of the state solution in regard to the   control parameter shall be conjunct with the necessary conditions for the optimal solutions.

Keywords


Navier-Stokes equations, boundary control, vorticity minimization.

Subject classification

35Q30, 49J20, 49J50, 76F70.

Sponsor(s)



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