Calculations of turbulent boundary layer pressure fluctuations transmitted into a viscoelastic layer

The objective of this paper is to develop a model for calculating the turbulent boundary layer pressure fluctuation transmitted into a layer of viscoelastic material. The theoretical model used here is a plane elastomer layer backed by a rigid plane surface. The other side of the plane surface is exposed to a turbulent flow. The transmitted flow noise received by a rectangular hydrophone embedded in the elastomer layer was calculated for various turbulent boundary layer forcing functions developed by Corcos, and by Chase. The transmitted flow noise was characterized by the frequency spectral density expressed in decibels. Wave‐vector spectral densities of various turbulent wall pressures were discussed. Effects of the elastomer layer thickness, material properties and flow conditions on the transmitted noise level are presented.