Results 1 to 10 of about 2,706 (180)
Gurney Flap Implementation on a DU91W250 Airfoil [PDF]
Proceedings, 2018 The increasing capability of Wind Turbine (WT) based power generation systems has derived in an increment of the WT rotor diameter, i.e., longer rotor blades.
Iñigo Aramendia +6 more
doaj +7 more sources
Performance Improvement of Variable Speed Rotors by Gurney Flaps [PDF]
Aerospace Science and Technology, 2017 Gurney flaps are used for improving the performance of variable speed rotors. An analytical model able to predict helicopter rotor power is first presented, and the flight data of the UH-60A helicopter is used for validation. The predictions of the rotor
Barakos, George N., Dong, Chen, Han, Don
core +5 more sources
Theoretical performances of double Gurney Flap equipped the VAWTs [PDF]
INCAS Bulletin, 2012 A Gurney flap is simply a flat plate attached perpendicularly to the lower surface of an airfoil or wing trailing edge. A T-strip or double Gurney flap is attached to both the upper and lower surfaces.
Horia DUMITRESCU +2 more
doaj +3 more sources
Computational modeling of Gurney flaps and microtabs by POD method [PDF]
Energies, 2018 Gurney flaps (GFs) and microtabs (MTs) are two of the most frequently used passive flow control devices on wind turbines. They are small tabs situated close to the airfoil trailing edge and normal to the surface.
Chacón Rebollo, Tomás +2 more
core +11 more sources
Enhancing start-up and torque in Darrieus VAWTs through a novel plain gurney flap design [PDF]
Scientific ReportsEnhancing aerodynamic efficiency and self-starting torque in Darrieus-type Vertical Axis Wind Turbines (VAWTs) is essential for power generation under low and intermittent wind conditions.
Wallaaldin Eltayeb +4 more
doaj +2 more sources
Randomized methods to characterize large-scale vortical flow networks. [PDF]
PLoS One, 2019 We demonstrate the effective use of randomized methods for linear algebra to perform network-based analysis of complex vortical flows. Network theoretic approaches can reveal the connectivity structures among a set of vortical elements and analyze their ...
Bai Z +4 more
europepmc +4 more sources
Effect of Gurney flap Height and Mounting Position on the Performance of a Centrifugal Fan [PDF]
Journal of Applied Fluid Mechanics, 2022 The effect of Gurney flap height and mounting position on the head coefficient of a centrifugal fan at different Reynolds numbers is investigated experimentally.
M. Suresh, N. Sitaram
doaj +1 more source
Wind tunnel testing of a full scale helicopter blade section with an upstream active Gurney flap [PDF]
, 2014 Wind tunnel tests were performed on an aerofoil section comparable to that of a full scale helicopter blade section with an upstream active Gurney flap in the framework of the European project CleanSky ITD Green RotorCraft.
Booker, J.D. +2 more
core +13 more sources
Lift Enhancement of Tiltrotor Wing Using a Gurney Flap
International Journal of Aerospace Engineering, 2022 A numerical investigation was undertaken to explore the lift-enhancing characteristics of the Gurney flap on a tiltrotor wing. The heights of Gurney flaps range from 1 to 4% wing chord lengths.
Hao Chen, Bo Chen
doaj +1 more source
Applied Sciences, 2022 Ultra-high-altitude unmanned aerial vehicles have created a high demand for the performance of propellers under low Reynolds numbers, while the efficiency of such propellers by the existing design framework has reached a bottleneck.
Yuan Yao +4 more
doaj +1 more source