Efficient Impedance Eductions for Liner Tests in Grazing Flow Incidence Tube

This paper presents an efficient impedance eduction method for grazing flow incidence tube by using a surrogating model along with the Wiener-Hopf method, which enables rapid acoustic predictions and effective impedance eductions over a range of parametric values and working conditions. The proposed method is demonstrated by comparing to the theoretical results, numerical predictions, and experimental measurements, respectively. All the demonstrations clearly suggest the capability and the potential of the proposed solver for parametric studies and optimizations of the lining methods.