Turbulent airfoil
Airfoil self-noise generation and propagation concerns the effects of mean flow and quadrupole sources on the broadband noise that arises from the interaction of turbulent boundary layers with the airfoil trailing edge and the tonal noise that arises from vortex shedding generated by laminar boundary layers and trailing-edge bluntness. Compressible large-eddy simulations (LES) are conducted for a NACA0012 aerofoil with rounded trailing edge to understand the influence of incidence angle, boundary layer tripping configurations and free-stream Mach numbers. Post-processing techniques are employed to identify coherent structures within the flow and quantify their influence by means of turbulent kinectic energy budgets.
Technology
- High Order Methods
- Proper Orthogonal Decomposition
- LES
