Abstract
In this article, we study the long-time behavior of solutions of the two-dimensional fluid-rigid disk problem. The motion of the fluid is modeled by the two-dimensional Navier–Stokes equations, and the disk moves under the influence of the forces exerted by the viscous fluid. We first derive L p−L q decay estimates for the linearized equations and compute the first term in the asymptotic expansion of the solutions of the linearized equations. We then apply these computations to derive time-decay estimates for the solutions to the full Navier–Stokes fluid-rigid disk system.
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Ervedoza, S., Hillairet, M. & Lacave, C. Long-Time Behavior for the Two-Dimensional Motion of a Disk in a Viscous Fluid. Commun. Math. Phys. 329, 325–382 (2014). https://doi.org/10.1007/s00220-014-1884-5
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DOI: https://doi.org/10.1007/s00220-014-1884-5