03.1 - Aerodynamics – CFD Methods and Validation
ANALYSIS OF A LAMINAR SEPARATION BUBBLE ON A NACA0009 AIRFOIL AT DIFFERENT BACKGROUND DISTURBANCE LEVELS
J.S. Kern¹, A. Hanifi¹, D.S. Henningson¹; ¹FLOW, Department of Engineering Mechanics, KTH Royal Institute o, Sweden
The laminar separation bubble forming on a NACA0009 airfoil at a steady pitch angle of 8 degrees and Reynolds number of 200 000 under the influence of free-stream disturbances is computed using high-fidelity large-eddy simulations. The extracted flow data is analysed using Spectral Proper Orthogonal Decomposition (SPOD) to extract the dominant structures in exhibiting spatio-temporal coherence.