Results 41 to 50 of about 142,516 (311)
MATEC Web of Conferences, 2018 A symmetrical airfoil has been constructed by local linearization method. A single-point objective function is defined to check the convergence of the method.
Bazgir Ali. S., Takovitskii Sergey. A.
doaj +1 more source
Effect of Using Bumps on Wings Aerodynamic Characteristics at Low Reynolds Numbers [PDF]
Engineering and Technology Journal, 2010 The effect of using bumps on the aerodynamic characteristics of airfoil at low Reynolds numbers is presented in this research. A theoretical study was done on the (NACA 4418) airfoil consist of bumps that have radius (2% c) on the upperand lower surfaces
doaj +1 more source
Effect of Airfoil Thickness on Flow Over the Cambered Airfoils
2023 10th International Conference on Recent Advances in Air and Space Technologies (RAST), 2023 In this research, an experimental study for NACA2412, NACA2415, and NACA2418 airfoils was carried out at angles of attack of 0°, 4°, 8 and at Re = 1.5 x 105, Re = 2.5 x 105 The oil-flow visualization technique and force measurement were used for experiments to analyze laminar separation bubble (LSB), separation and reattachment formations over the ...
Sinem Keskin +5 more
openaire +3 more sources
Sinusoidal-gust generation with a pitching and plunging airfoil
, 2019 The generation of uniform, periodic gust disturbances in an experimental context is demonstrated using a single oscillating airfoil. A pitching and heaving symmetric airfoil is suggested as a simpler alternative to existing gust-generation methods.
Kissing, Johannes +2 more
core +1 more source
An experimental study of airfoil instability tonal noise with trailing edge serrations [PDF]
, 2013 This paper presents an experimental study of the effect of trailing edge serrations on airfoil instability noise. Detailed aeroacoustic measurements are presented of the noise radiated by an NACA-0012 airfoil with trailing edge serrations in a low to ...
Arbey +27 more
core +1 more source
Numerical investigation of the effect of airfoil thickness on onset of dynamic stall [PDF]
Journal of Fluid Mechanics, 2017 Effect of airfoil thickness on onset of dynamic stall is investigated using large eddy simulations at chord-based Reynolds number of 200 000. Four symmetric NACA airfoils of thickness-to-chord ratios of 9 %, 12 %, 15 % and 18 % are studied.
Anupam Sharma, M. Visbal
semanticscholar +1 more source
Numerical Simulation of Flapping Airfoil Aerodynamic Characteristics
Applied SciencesFlapping airfoil flight technology is widely used in defense and civilian fields, and huge economic benefits can be created. The bionic flapping airfoil is the research object of this paper.
Junjie Xu +3 more
doaj +1 more source
Computers & FluidsThe development of a Large Airfoil Model (LAM), a transformative approach for answering technical questions on airfoil aerodynamics, requires a vast dataset and a model to leverage it. To build this foundation, a novel probabilistic machine learning approach, A Deep Airfoil Prediction Tool (ADAPT), has been developed.
Howon Lee +3 more
openaire +2 more sources
Applied Sciences, 2021 Sustainability has become one of the most significant considerations in everyday work, including energy production. The fast-growing trend of wind energy around the world has increased the demand for efficient and optimized airfoils, which has paved the ...
Md Tausif Akram, Man-Hoe Kim
doaj +1 more source
Improving Airfoil Drag Prediction [PDF]
34th Wind Energy Symposium, 2016 An improved formulation of drag estimation for thick airfoils is presented. Drag underprediction in XFOIL-like viscous-inviscid interaction methods can bequite significant for thick airfoils usedinwind turbine applications (up to 30%, as seen in the present study).
Ozdemir, H. +2 more
openaire +3 more sources