Results 11 to 20 of about 2,745 (210)

Experimental Study on Aerodynamic Characteristics of a Gurney Flap on a Wind Turbine Airfoil under High Turbulent Flow Condition

Applied Sciences, 2020
The objective of the current work is to experimentally investigate the effect of turbulent flow on an airfoil with a Gurney flap. The wind tunnel experiments were performed for the DTU-LN221 airfoil under different turbulence level (T.I.
Junwei Yang, Hua Yang, Weijun Zhu, Nailu Li, Yiping Yuan   +4 more
doaj   +3 more sources

Active Fluid Gurney Flaps, Controllable Lift Enhancement Toward Wind Turbine Power Production Regulation

Wind Energy
Meeting the rising demand for renewable energy requires innovative solutions to enhance wind power extraction, particularly given demographic and geographic constraints on wind farm deployment.
Mario Lucas, Jorge Saavedra
doaj   +2 more sources

Dynamical mode decomposition of Gurney flap wake flow

Theoretical and Applied Mechanics Letters, 2011
AbstractThe present work uses dynamic mode decomposition (DMD) to analyze wake flow of NACA0015 airfoil with Gurney flap. The physics of DMD is first introduced. Then the PIV-measured wake flow velocity field is decomposed into dynamical modes. The vortex shedding pattern behind the trailing edge and its high-order harmonics have been captured with ...
Pan, Chong, Yu, Dongsheng, Wang, Jinjun
openaire   +3 more sources

Computational aeroelastic analysis of a hovering W3 Sokol blade with gurney flap [PDF]

Journal of Fluids and Structures, 2015
This paper demonstrates the potential effect of a gurney flap on the performance of the W3-Sokol rotor blade in hover. A rigid blade was first considered and the calculations were conducted at several thrust settings. The gurney flap was extended from 46%
Barakos, G. N., Małecki, J., Pastrikakis, V. A., Steijl, R.   +3 more
core   +3 more sources

Computational study of vortex shedding and its effects on asymmetrical airfoil with gurney flap

International Journal of Thermofluids
The rise in airport and airline operations has increased compelling interest in aircraft noise. The aerodynamic noise initiated by the high-lifting devices is now comparable to the aircraft engine's noise.
Balram Mandal, Roshani Kumari Gupta, Abhinav Adhikari, Mit Manojbhai Sheth, Rameshkumar Bhoraniya, Atal Bihari Harichandan   +5 more
doaj   +3 more sources

Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysis

Results in Engineering
Darrieus vertical axis wind turbines (VAWTs) have limited self-starting torque, especially in urban areas with low and changing wind speeds. This study modifies NACA 0015 aerofoils with Plain Flaps (PF) and Gurney Flaps (GF) to improve aerodynamic ...
Wallaaldin Abass Eltayeb, Jarupula Somlal   +1 more
doaj   +3 more sources

Increase in Ia Afferent Synaptic Excitation of SOD1 G93A Mouse Motoneurons by 2-Week Anodal Trans-Spinal Direct Current Stimulation Does Not Ameliorate the Cellular Burden of the Disease. [PDF]

Eur J Neurosci
In the presymptomatic SOD1 G93A mouse model of ALS, spinal motoneuron (MN) synaptic excitation is reduced due to disruptions in the postsynaptic elements of Ia synapses. Two weeks of anodal tsDCS were applied to SOD1 G93A animals to modulate MN synaptic excitation levels.
Jankowiak T, Cholewiński M, Kryściak K, Krok E, Grycz K, Bączyk M.   +5 more
europepmc   +2 more sources

Pengaruh Penambahan Gurney Flap pada Airfoil Jenis Mshd pada Mobil Fastback dengan Variasi Ketinggian Gurney Flap dan Kemiringan Sudut Airfoil Dengan Metode Permodelan CFD

Mekanika, 2020
Faktor aerodinamika merupakan faktor penting dalam mendesain suatu kendaraan. Faktor aerodinamika menjadi penting karna sangat berpengaruh pada performa kendaraan dan faktor keselamatan dari kendaraan itu sendiri.
Naufal Ikhsan Alfajri, Dominicus D. P. Tjahjana, Ph.D, Budi Kristiawan   +2 more
doaj   +1 more source

Aerodynamic Characteristics of Ahmed Body with Inverted Airfoil Eppler 423 and Gurney Flap on Fastback Car

Automotive Experiences, 2022
The installation of aerodynamic devices, such as rear wings with the application of a Gurney flap, is very important to improve the performance of vehicles and can generate downforce and reduce slip when a car turns and brakes.
Zainal Arifin, Suyitno Suyitno, Dominicus Danardono Dwi Prija Tjahjana, Wibawa Endra Juwana, Rendy Adhi Rachmanto, Chico Hermanu Brillianto, Ubaidillah Ubaidillah, Singgih Dwi Prasetyo, Arinal Falah Muhammad, Mohd Afzanizam Mohd Rosli   +9 more
doaj   +1 more source

Aerodynamic optimization of NACA 0012 airfoils with attached Gurney flap in the rarefied gas flow

AIP Advances, 2023
The aerodynamic optimization of a Gurney flap attached to the NACA 0012 airfoil in rarefied gas flow is studied in this study. In order to investigate the effects of Gurney flap geometry (height, mounting angle, and mounting location) and angle of attack
Keren Lin, Songqin Zhang, Chenfan Liu, Haiwei Yang, Bin Zhang   +4 more
doaj   +1 more source