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Topic

Airfoil

About: Airfoil is a research topic. Over the lifetime, 24696 publications have been published within this topic receiving 337709 citations. The topic is also known as: aerofoil & wing section.


Papers
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Journal ArticleDOI
TL;DR: In this paper, a moving surface boundary-layer control (MSBC) is proposed for a family of two-dimensional airfoils with rotating cylinders located at the leading edge and/or trailing edge as well as the top surface of the airfoil.

185 citations

01 Oct 1987
TL;DR: In this paper, a large body of experimental results, obtained in more than 40 wind tunnels on a single, well-known two-dimensional configuration, has been critically examined and correlated.
Abstract: A large body of experimental results, obtained in more than 40 wind tunnels on a single, well-known two-dimensional configuration, has been critically examined and correlated. An assessment of some of the possible sources of error has been made for each facility, and data which are suspect have been identified. It was found that no single experiment provided a complete set of reliable data, although one investigation stands out as superior in many respects. However, from the aggregate of data the representative properties of the NACA 0012 airfoil can be identified with reasonable confidence over wide ranges of Mach number, Reynolds number, and angles of attack. This synthesized information can now be used to assess and validate existing and future wind tunnel results and to evaluate advanced Computational Fluid Dynamics codes.

184 citations

Journal ArticleDOI
TL;DR: In this article, a two-dimensional airfoil with either a bilinear or cubic structural nonlinearity in pitch, and subject to incompressible flow has been analyzed using Wagner's function.

184 citations

Journal ArticleDOI
TL;DR: In this paper, an aerodynamic design algorithm for turbulent flow using unstructured grids is described, which is based on an implicit formulation in which the turbulence model is fully coupled with the e ow equations when solving for the costate variables.
Abstract: An aerodynamic design algorithm for turbulent e ows using unstructured grids is described. The current approachusesadjoint (costate)variablestoobtainderivativesofthecostfunction.Thesolutionoftheadjointequations is obtained by using an implicit formulation in which the turbulence model is fully coupled with the e ow equations when solving for the costate variables. The accuracy of the derivatives is demonstrated by comparison with e nite difference gradients, and a few sample computations are shown. Recommendations on directions of further research into the Navier ‐Stokes design process are made. Nomenclature A = area of control volume a = speed of sound C ¤ = constant used in Sutherland’ s law for viscosity cb1;cb2;cv1; = constants used in Spalart ‐Allmaras cw1;cw2;cw3 turbulence model cd = drag cl = lift c1

183 citations

Journal ArticleDOI
TL;DR: A review of the characteristics and mechanisms of lift enhancement by the Gurney flap and its applications can be found in this article, where the authors also discuss the application of the GURNey flap to modern aircraft design.

183 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231,083
20221,871
2021923
2020979
20191,097
20181,002