Response of an array of hydrophones embedded in an elastomer layer to a modified Corcos turbulent wall pressure spectrum

A study was made of a theoretical model for evaluating turbulent boundary layer pressure fluctuations received by an array of rectangular hydrophones embedded in a layer of elastomer. The theoretical model considered in the present study is a plane elastomer layer backed with an infinite plate of finite thickness; the other side of the layer is exposed to turbulent flow. The transmitted flow noise was calculated with an empirically modified model of the Corcos turbulent wall pressure spectrum and was characterized by the frequency spectral density. The results presented here are numerical calculations of flow noise reductions, which are given relative to the noise levels computed for the flush‐mounted point hydrophone. Effects of the elastomer layer thickness, the backing plate thickness, the hydrophone dimensions, and the array dimensions on noise reduction are provided.