Abstract
A coupled system of partial differential equations modeling the interaction of a fluid and a structure with delay in the feedback is studied. The model describes the dynamics of an elastic body immersed in a fluid that is contained in a vessel, whose boundary is made of a solid wall. The fluid component is modeled by the linearized Navier-Stokes equation, while the solid component is given by the wave equation neglecting transverse elastic force. Spectral properties and exponential or strong stability of the interaction model under appropriate conditions on the damping factor, delay factor and the delay parameter are established using a generalized Lax-Milgram method.
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Peralta, G. A fluid–structure interaction model with interior damping and delay in the structure. Z. Angew. Math. Phys. 67, 10 (2016). https://doi.org/10.1007/s00033-015-0611-1
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DOI: https://doi.org/10.1007/s00033-015-0611-1