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Mathematics > Numerical Analysis

arXiv:1406.2171 (math)
[Submitted on 9 Jun 2014]

Title:Time-Dependent Fluid-Structure Interaction

Authors:George C. Hsiao, Francisco-Javier Sayas, Richard J. Weinacht
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Abstract:The problem of determining the manner in which an incoming acoustic wave is scattered by an elastic body immersed in a fluid is one of central importance in detecting and identifying submerged objects. The problem is generally referred to as a fluid-structure interaction and is mathematically formulated as a time-dependent transmission problem. In this paper, we consider a typical fluid-structure interaction problem by using a coupling procedure which reduces the problem to a nonlocal initial-boundary problem in the elastic body with a system of integral equations on the interface between the domains occupied by the elastic body and the fluid. We analyze this nonlocal problem by the Lubich approach via the Laplace transform, an essential feature of which is that it works directly on data in the time domain rather than in the transformed domain. Our results may serve as a mathematical foundation for treating time-dependent fluid-structure interaction problems by convolution quadrature coupling of FEM and BEM.
Subjects: Numerical Analysis (math.NA)
Cite as: arXiv:1406.2171 [math.NA]
  (or arXiv:1406.2171v1 [math.NA] for this version)
  https://doi.org/10.48550/arXiv.1406.2171

Submission history

From: Francisco-Javier Sayas [view email]
[v1] Mon, 9 Jun 2014 13:17:58 UTC (20 KB)
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