In this paper, we prove a controllability result for a fluid-structure interaction problem. In dimension two, a rigid structure moves into an incompressible fluid governed by Navier-Stokes equations. The control acts on a fixed subset of the fluid domain. We prove that, for small initial data, this system is null controllable, that is, for a given , the system can be driven at rest and the structure to its reference configuration at time . To show this result, we first consider a linearized system. Thanks to an observability inequality obtained from a Carleman inequality, we prove an optimal controllability result with a regular control. Next, with the help of Kakutani’s fixed point theorem and a regularity result, we pass to the nonlinear problem.
Classification : 35Q30, 93C20
Mots clés : controllability, fluid-solid interaction, Navier-Stokes equations, Carleman estimates
@article{COCV_2008__14_1_1_0, author = {Boulakia, Muriel and Osses, Axel}, title = {Local null controllability of a two-dimensional fluid-structure interaction problem}, journal = {ESAIM: Control, Optimisation and Calculus of Variations}, pages = {1--42}, publisher = {EDP-Sciences}, volume = {14}, number = {1}, year = {2008}, doi = {10.1051/cocv:2007031}, zbl = {1149.35068}, mrnumber = {2375750}, language = {en}, url = {http://www.numdam.org/articles/10.1051/cocv:2007031/} }
TY - JOUR AU - Boulakia, Muriel AU - Osses, Axel TI - Local null controllability of a two-dimensional fluid-structure interaction problem JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 2008 DA - 2008/// SP - 1 EP - 42 VL - 14 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/cocv:2007031/ UR - https://zbmath.org/?q=an%3A1149.35068 UR - https://www.ams.org/mathscinet-getitem?mr=2375750 UR - https://doi.org/10.1051/cocv:2007031 DO - 10.1051/cocv:2007031 LA - en ID - COCV_2008__14_1_1_0 ER -
Boulakia, Muriel; Osses, Axel. Local null controllability of a two-dimensional fluid-structure interaction problem. ESAIM: Control, Optimisation and Calculus of Variations, Tome 14 (2008) no. 1, pp. 1-42. doi : 10.1051/cocv:2007031. http://www.numdam.org/articles/10.1051/cocv:2007031/
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