Figure 2From: On impedance conditions for circular multiperforated acoustic linersSplit of the domain Ω into the two semi-infinite waveguides \(\varOmega_{\pm}\) and the multi-perforated liner section \(\varOmega_{\mathrm{c}}\). Impedance transmission conditions on the interface \(\varGamma_{\mathrm {liner}}\) approximate the behaviour of the many perforationsBack to article page