Spatially-varying impedance model for locally reacting acoustic liners at a high sound intensity

This paper is concerned with spatially-varying acoustic liner impedance in aeroacoustic ducts, the presence of a high sound pressure level. It shown that discontinuity leading order parameter definition variation. A large yields normal velocity variation, to significant nonlinear effects. An iterative numerical strategy proposed predict over liner. Bayesian inference process coupled surrogate model validate measurements fields above at intensity, obtained using laser Doppler velocimetry.