Buffet phenomena on supercritical airfoils were investigated both experimentally and numerically. The experiment was done for NACA0012 and KORN 75-06-12 airfoils using a high-speed Schlieren video tape recorder and pressure transducers. The analysis shows significant effects of the geometries and the Reynolds number. A 2-D N-S code was used to predict these phenomena. The result shows the macro-scale effects of airfoil geometry, Reynolds number and transition. A fine structure of the motion such as the periodic trailing edge pressure history was captured. The basic frequency of the buffet motion agrees well with the experiment.
Computational and Experimental Research on Buffet Phenomena of Transonic Airfoils
1988
22 pages
Report
No indication
English
Aircraft , Aerodynamics , Airfoil profiles , Buffeting , Computational fluid dynamics , Transonic flow , Supercritical airfoils , Unsteady aerodynamics , Angle of attack , Navier-stokes equation , Power spectra , Pressure sensors , Reynolds number , Schlieren photography , Trailing edges , Wind tunnel tests , Foreign technology
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