High-Performance Finite Element Modeling of Aeroacoustic Noise in Next-Generation Aircraft Cabins

Among the most urgent issues pertaining to the guarantee of the comfort of the passengers and to adhere to the stringent aviation noise requirements are noise in aircraft cabins that are caused by aerodynamics. The conventional theoretical models of analysis are, in most cases, not effective in the explanation of the complex fluid-structure interactions that trigger the development of the cabin noise at turbulent flow conditions. The prediction of the aeroacoustic noise transmission has been outlined in the paper as a high-fidelity finite element method (FEM) strategy of lightweight aircraft fuselages of the next generation. The two latter variables are the turbulent pressure variations of the boundary layer and the structural-acoustic interaction, which is why the sound-generating structural-air interactions can be properly simulated in the proposed model. The scalable parallel processing is performed with the aid of high-performance computing (HPC) resources to make sure that the geometries of the large-scale 3D cabins can be managed on the scale. The obtained results indicate that there is great preciseness in prediction as compared with the traditional semi-empirical models and maximization of the computational efficiency through domain division and adaptive meshwork. Novelty of this work is that the work has a single FEM-based aeroacoustic model that takes into account the nonlinear coupling of flow structures at realistic Reynolds numbers. The research can equip an aerospace engineer with an instrument that has proved to be successful in the execution of noise-reduction measures at a later design phase and also reduce cost one incurs in implementing the change later in the stage of design. The outcomes provide some guidance to the mute, fuel-efficient aircraft models, which are associated with the aerospace industry sustainability and passengers-experience strategies.