The internal stabilization by noise of the linearized Navier-Stokes equation

Barbu, Viorel 

ESAIM: Control, Optimisation and Calculus of Variations, Tome 17 (2011) no. 1, pp. 117-130

Résumé

One shows that the linearized Navier-Stokes equation in $𝒪\subset R^d,d\ge 2$, around an unstable equilibrium solution is exponentially stabilizable in probability by an internal noise controller ${\displaystyle V(t,\xi )=\sum _{i=1}^N{V}_i\left(t\right){\psi }_i\left(\xi \right){\dot{\beta }}_i\left(t\right)}$, $\xi \in 𝒪$, where ${\left\{{\beta }_i\right\}}_{i=1}^N$ are independent Brownian motions in a probability space and ${\left\{{\psi }_i\right\}}_{i=1}^N$ is a system of functions on $𝒪$ with support in an arbitrary open subset ${𝒪}_0\subset 𝒪$. The stochastic control input ${\left\{V_i\right\}}_{i=1}^N$ is found in feedback form. One constructs also a tangential boundary noise controller which exponentially stabilizes in probability the equilibrium solution.

Détail

DOI : 10.1051/cocv/2009042

Classification : 35Q30, 60H15, 35B40
Keywords: Navier-Stokes equation, feedback controller, stochastic process, Stokes-Oseen operator