Acoustic Invisibility in Turbulent Fluids

Abstract

Acoustic invisibility of a cloaking system in turbulent uids has been poorly understood. Here we show that evident scattering would appear in turbulent wakes owing to the submergence of a classical cloaking device. The inherent mechanism is explained using our theoretical model, which eventually inspires us to develop an optimized cloaking approach. Both the near- and far-field scatted fields are examined using high order computational acoustic methods. The remarkably low scattering demonstrates the effectiveness of the proposed acoustic cloaking approach for turbulent uid cases.

arXiv comment6 pages, 4 figures in the attachment, but 3 Figures in the article