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.
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108 citations
TL;DR: In this article, an oscillating freestream over a stationary S809 airfoil is simulated numerically using ANSYS Fluent 12.1 and compared with aerodynamic coefficients from existing experimental and semi-empirical data.
108 citations
Patent•
27 Dec 1984
TL;DR: In this paper, a system of flow control devices which result in reduced skin friction on aerodynamic and hydrodynamic surfaces is described, which results in a substantial reduction in skin friction drag.
Abstract: The invention is a system of flow control devices which result in reduced skin friction on aerodynamic and hydrodynamic surfaces The devices cause a breakup of large-scale disturbances in the boundary layer of the flow field Referring to FIGS 1 and 2, the riblet device 10 acts to reduce disturbances near the boundary layer wall by the use of longitudinal striations forming vee-shaped grooves These grooves are dimensional on the order of the wall vortices and turbulent burst dimensions 31 depicted in FIG 3 The large-eddy breakup device 41, depicted in FIGS 4 and 5, is a small strip or airfoil which is suspended in the upper region of the boundary layer Various physical mechanisms cause a disruption of the large-scale vortices The combination of the devices of this invention result in a substantial reduction in skin friction drag
107 citations
TL;DR: In this article, an airfoil with control surface freeplay (a common structural nonlinearity) is used to investigate transonic flutter and limit cycle oscillations, assuming the shock motion is small and in proportion to the structural motions.
107 citations
TL;DR: In this article, the effect of solidity and airfoil profile on the performance of VAWT was studied using ANSYS Fluent four different airfoils (NACA 0012, NACA 0015, AIR 0030 and AIR 001) with an incoming wind velocity of 10m/s.
107 citations