Stabilization of a rigid body moving in a compressible viscous fluid

Arnab Roy; Takéo Takahashi

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arXiv · 1910.07304

Stabilization of a rigid body moving in a compressible viscous fluid

Arnab Roy·Takéo Takahashi

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Abstract

We consider the stabilizability of a fluid-structure interaction system where the fluid is viscous and compressible and the structure is a rigid ball. The feedback control of the system acts on the ball and corresponds to a force that would be produced by a spring and a damper connecting the center of the ball to a fixed point $h_1$. We prove the global-in-time existence of strong solutions for the corresponding system under a smallness condition on the initial velocities and on the distance between the initial position of the center of the ball and $h_1$. Then, we show with our feedback law, that the fluid and the structure velocities go to 0 and that the center of the ball goes to $h_1$ as $t\to \infty$.

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Arnab Roy, Takéo Takahashi. 2019-10-16. Stabilization of a rigid body moving in a compressible viscous fluid. https://arxiv.org/abs/1910.07304

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