Scale-resolving simulations of aeroacoustic sound from Coanda flaps (A08#)

• Subject Area: Fluid Mechanics
• Term: from 2015 to 2018
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 133733460

The project aims to further enhance the understanding of the source mechanisms of solid and porous mate-rials inside turbulent flows by the use of scale-resolving simulations. On the basis of Large Eddy Simula-tions (LES), the source mechanism and sound reduction of porous materials (simple as well as spatially graded) are investigated. The porous material will be modeled with a volume-averaged approach, where a linear model version is supplied by project A1. This volume-averaged model, extended with nonlinear terms, serves to clarify the sound generation while fully accounting for the nonlinear interaction between fluid and acoustics. The simulation method will be validated with DNS data and (aeroacoustic) experimental data.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 880: Fundamentals of High Lift for Future Civil Aircraft
• Applicant Institution: Technische Universität Braunschweig
• Co-Applicant Institution: Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR); Standort Braunschweig
• Project Heads: Professor Dr. Rinie Adrianus Dejan Akkermans; Dr.-Ing. Roland Ewert