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Session: Experimental and numerical data assimilation II
Session starts: Thursday 06 November, 14:20
Presentation starts: 14:40
Room: Lecture room B

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Konstantinos Kellaris (School of Mechanical Engineering, National Technical University of Athens, Athens, Greece)
Marinos Manolesos (School of Mechanical Engineering, National Technical University of Athens, Athens, Greece)
Giorgos Efrem (Laboratory of Fluid Mechanics and Turbomachinery, Department of Mechanical Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece)
Pavlos Kaparos - Tsafos (Laboratory of Fluid Mechanics and Turbomachinery, Department of Mechanical Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece)
Pericles Panagiotou (Laboratory of Fluid Mechanics and Turbomachinery, Department of Mechanical Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece)

Abstract:
This study presents a validation of an automated CFD framework for the aerodynamic analysis of fixed-wing UAVs, through a comparative investigation with wind tunnel measurements. Experiments were conducted in a low-speed closed-circuit WT using three representative wing geometries used in both conventional and BWB UAV configurations. Force measurements and subsequent flow visualization techniques were employed. The CFD simulations demonstrated good agreement with experimental results. However, discrepancies in lift slopes were observed and discussed. The results affirm the CFD framework's robustness and underscore the importance of enhanced turbulence and transition modeling for accurate aerodynamics assessment in UAV design.