Print Email Facebook Twitter Experimental investigation of transonic buffet on swept wings Title Experimental investigation of transonic buffet on swept wings: A comparative study between 2D and 3D flow and analysis of sweep angle influence using stereoscopic PIV and Background Oriented Schlieren Author Camps Pons, Carlos (TU Delft Aerospace Engineering) Contributor van Oudheusden, Bas (mentor) Schrijer, Ferdinand (mentor) D'Aguanno, Alessandro (mentor) von Terzi, Dominic (graduation committee) Degree granting institution Delft University of Technology Programme Aerospace Engineering Date 2019-11-28 Abstract Transonic buffet is an aerodynamic instability that appears on aerofoils and wings at certain combinations of Mach number and angle of attack, and which limits the aircraft flight envelope. This thesis project presents an experimentalinvestigation of buffet employing stereoscopic PIV and Background Oriented Schlieren. By using four aerodynamic models, a 2D aerofoil and three 3D wings with sweep angles of 0o, 15o and 30o, the differences between the 2D buffet typical of aerofoils and the 3D buffet typical of swept wings is studied, scrutinising the influence of the sweep angle. The results confirm that for the same aerodynamic conditions the 2D buffet experiences larger shock oscillations than the 3D case. A frequency analysis reveals a clear peak at 160 Hz for the 2D case, which is also visible in the 3D case for low sweep angles. As the sweep angle increases, this peak is replaced by a bump at higher frequencies. Subject Transonic buffetSwept WingStereoscopic Particle Image Velocimetry (SPIV)Background Oriented Schlieren To reference this document use: http://resolver.tudelft.nl/uuid:c1a52829-0267-4211-bf93-109fba0db350 Part of collection Student theses Document type master thesis Rights © 2019 Carlos Camps Pons Files PDF MScThesisCarlosCampsPons.pdf 18.62 MB Close viewer /islandora/object/uuid:c1a52829-0267-4211-bf93-109fba0db350/datastream/OBJ/view