An inverse fluid--solid interaction problem

Abstract

This paper is devoted to studying the Linear Sampling Method (LSM) applied to the inverse problem for the fluid-solid interaction problem of determining the shape of the solid from far field measurements of the fluid pressure field. We provide a simplified proof of the uniqueness problem in this case, an analysis of the appropriate interior transmission problem, and the existence of a solution to the LSM that can be used as an indicator for the shape of the solid.The analysis of uniqueness rests on a new technical result concerning regularity.Finally we present some numerical results for the method.