Study of the influence of turbulent flows on the aerodynamic performance of fixed-wing aircraft type UAV MALE

A study of the air behavior in the near-wake region of the NACA0012 airfoil infinite wing model at low Reynolds numbers was conducted. The study consisted of comparing the results obtained from experiments with those from numerical simulations. The numerical results of the velocity profiles in the n...

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Bibliographic Details
Published in:INCAS bulletin 2023-12, Vol.15 (4), p.107-122
Main Authors: CUCU, Catalin, PUPAZA, Cristina, JANSSENS, Bart, MIHAILA-ANDRES, Mihai
Format: Article
Language:English
Subjects:
Aerodynamics
Air flow
Aircraft
Aircraft configurations
Aircraft performance
Airfoils
Airframes
Aviation
Boundary layers
Ceiling (aircraft capability)
Finite element analysis
Fixed wings
Flow separation
Flow velocity
Fluid flow
Fuselages
laminar separation bubble
Lasers
les
low reynolds numbers
Mathematical models
near-wake
piv
Reynolds number
Simulation
Software
spalart-allmaras
uav fuselage
Unmanned aerial vehicles
Velocity distribution
Viscosity
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Summary:A study of the air behavior in the near-wake region of the NACA0012 airfoil infinite wing model at low Reynolds numbers was conducted. The study consisted of comparing the results obtained from experiments with those from numerical simulations. The numerical results of the velocity profiles in the near-wake region showed good agreement with those provided by the PIV system for most of the simulations and those in the literature. In addition, boundary layer separation and reattachment forming a laminar separation bubble along the airfoil was captured using simulations in Ansys Fluent and compared with a literature database to better confirm the simulation results. The UAVs have a complex cross-section shape of the fuselage. The second part of this paper explores the aerodynamic consequences of its shape, at the operational flight ceiling, in a comparative approach for three different fuselage designs.
ISSN:2066-8201
2247-4528
DOI:10.13111/2066-8201.2023.15.4.9