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UMINF 16.12

On the use of thin structures to control the far-field properties of an acoustic devices

This work presents a sensitivity analysis for topology optimization of thin structures inside an acoustic horn in order to improve its far-field directivity properties. The objective function gradient is computed using an adjoint-based method, a well-known approach in the design optimization community due to its ability to compute the design sensitivities when there is a large number of design variables. The accuracy of the computed gradient is verified numerically against a first order finite difference approximation. The report also covers the matrix representations of the far-field pattern evaluation and the variational problem with an interface condition to model the thin structures.

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Entry responsible: Esubalewe Lakie Yedeg

Page Responsible: Frank Drewes
2022-09-30