| dc.description.abstract |
A computational and experimental analysis of a wing model with Variable Geometry
Raked Wingtip (VGRWT) has been conducted to determine the aerodynamic performance
advantages over an untreated wingtip. Computational fluid dynamics (CFD) simulations
were performed to study the flow behaviour over the wing and the effect of changing the
wingtip geometry on aerodynamic parameters such as lift, drag, and circulation. Wing
models with raked wingtips at different angles of rake (250
, 300
, 400
, 500
) and a baseline
model with an untreated wingtip have been designed through Solidworks software. The
designs are then imported to ANSYS (Fluent) software to carry out numerical investigation
at different angles of attack (0
0
, 2
0
, 4
0
, 6
0
and 8
0
). After that, the best-performing wing
(Based on the simulation results) was fabricated and experimented with to validate the
simulation results. All the simulations and experiments are conducted at a constant velocity
of 20 m/s (0.0583 Mach). The results revealed that changing the geometry of the wingtip
can have a profound impact on the aerodynamic performance of the aircraft. In particular,
the study showed that raked wingtips could significantly enhance the lift-to-drag ratio,
improving fuel efficiency and reducing emissions. The results of the CFD simulations also
indicated that the angle of the rake plays a critical role in determining the aerodynamic
performance of the raked wingtips. Optimizing the angle of the rake for specific flight
conditions made it possible to achieve even more significant improvements in the lift-todrag ratio. Furthermore, the study found that the benefits of raked wingtips were
particularly pronounced at high angles of attack and during takeoff and landing, where the
improvement in lift and reduction in drag could have a substantial impact on the
performance of the aircraft. |
en_US |
