Interpolation Technique for Computational Aeroacoustics and Vibroacoustics

Since the beginning of computational aeroacoustics
(CAA), hybrid methodologies have been established as
the most practical methods for aeroacoustic computations.
In aeroacoustics, the well known disparity of
length scale for low Mach number flows causes a very
efficient computational procedure and well suited simulation models using different meshes for flow and acoustics.
The workflow of these aeroacoustic approaches is based
on three steps: (1) perform unsteady flow computations
based on an appropriate turbulence model on a restricted
sub-domain; (2) compute the acoustic sources; (3) simulate the acoustic field. It should be noted that analog to
aeroacoustics, decoupled vibro-acoustic simulations follow a similar three step approach, aiming to compute
the acoustic field due to structural deformations.
We analyze the second step of the hybrid aeroacoustic workflow. Desirably, an accurate, flexible, and conservative coupling scheme ensures a rigorous connection
between fluid dynamics and acoustics within a hybrid
aeroacoustic simulation.