## Abstract

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.

(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.

Original language | English |
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Title of host publication | DAGA 2018 Tagungsband |

Pages | 489 - 492 |

Number of pages | 4 |

Publication status | Published - 2018 |