An accelerated BEM for simulation of noise control in the aircraft cabin

In this paper passive noise control in the aircraft cabin by using nanofibre textiles is investigated. The acoustic performance of the aircraft cabin under different noise sources and with various seat textiles is tested experimentally and analysed numerically. The numerical results are obtained by means of the three-dimensional Boundary Element Method (BEM) accelerated by the Adaptive Cross Approximation (ACA) and the Generalised Minimum Residual (GMRES) solver. Some numerical analysis are carried out in order to assess the accuracy of the numerical model in comparison with experimental results. A new nanofibre textile with excellent acoustic properties in the low frequency range is modelled and its performance assessed. Finally, a new shape of the seatsʼ headrest, aimed at reducing further the noise disturbance, is proposed and analysed.