Multidisciplinary advanced computations: Fluid dynamics, Aeroacoustics, Structural dynamics, part 3

Purpose and goal

The purpose is to study internal weapon bays (IWB) in transonic flow and how its flexible structure interacts with acoustic phenomena as well as how the structural vibrations of the cavity entail internal aircraft noise. The goal is to create an analysis process that ties together external flow with internal noise and to formulate "best practice" for this type of analysis. Furthermore, the goal for the project’s industrial PhD is to finalize scientific publications and to defend his thesis.

Expected effects and result

The project is expected to result in an improved ability to use calculations to predict external and internal noise associated to IWB´s in transonic flow, aeroelastic structural deformations and a deeper understanding of the interaction between acoustics and structural vibrations. The expected results will have an effect on the development of future military aircraft, civil aircraft platforms and derivatives thereof where multidisciplinary computations are of great importance.

Planned approach and implementation

The project is a continuation of earlier MultFAS projects. Technically, the project is based on fluid-structure interaction (FSI), where the flow field is simulated using hybrid RANS-LES methods, to create a deeper understanding of the interaction between external aerodynamics/acoustics, structural dynamics and internal noise with respect to cavity flow. The main focus is to finalize analyzes, formulate best practice and report those in scientific publications and in the industrial PhD’s thesis.