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Showing 1 to 8 of 8 for “"Multi Element Airfoil"”.
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Investigating the frequency behavior of fluidic oscillators and their application as active flow control for an SNLF airfoil
… oscillators under different inlet conditions. A multi-variate non-linear regression procedure was used to build a model to predict the frequency behavior of a fluidic oscillator given a set of internal geometries and inlet conditions. The SNLF S414 airfoil is a multi-element airfoil with an open …
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Assessment of Model Validation, Calibration, and Prediction Approaches in the Presence of Uncertainty
… computational fluid dynamics simulations of a multi-element airfoil. A simplified model was then developed using thin airfoil theory. This simplified model was then assessed using the synthetic experimental data. The quantities examined include the two dimensional lift and moment coefficients …
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Optimum Design of Compact, Quiet, and Efficient Ventilation Fans
… and noise was formulated and implemented using a multi-objective genetic algorithm. The methodology incorporates a control vortex design approach that results in a spanwise chord and twist distribution of the blades that maximize the volumetric flow rate contribution of the outer radii, i.e. the …
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Aerodynamic interaction of an inverted wing with a rotating wheel
… between the wing - wheel configuration and a multi-element airfoil has been used to partly explain the aerodynamic interaction between the components, based on the cross flow along the flap trailing edge. The application of a steady RANS computational approach with Spalart Allmaras turbulence …
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Integrated Multidisciplinary Design Optimization Using Discrete Sensitivity Analysis for Geometrically Complex Aeroelastic Configurations
… two steps in the development of an integrated multidisciplinary design optimization procedure capable of analyzing the nonlinear fluid flow about geometrically complex aeroelastic configurations have been accomplished in the present work. For the first step, a three-dimensional unstructured …
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Experimental investigation of multielement airfoils for large-scale wind turbines
Experimental results for high-lift multielement airfoils for application to megawatt-scale wind turbines are presented in this thesis. Two different airfoil configurations tested were designed for the inboard section of a 10 MW-scale wind turbine. The airfoil systems were designed as an airfoil …
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High lift configuration of a slotted natural laminar flow airfoil
… were performed on a slotted natural laminar flow airfoil, the S414. The slotted natural laminar flow airfoil concept was developed to satisfy design constraints of high maximum lift and low profile drag. A two-element natural laminar flow configuration allows the typical rapid trailing-edge …
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Active Flow Control of a Three-Element Airfoil in Unbounded Flow and in Ground Effect
<p>Multi-element high lift devices are used in aircraft wings to have higher lift at low speed during take-off and landing. 30P30N is a three-element airfoil developed by NASA/McDonnell Douglas for which high quality flow field data is available. As a result, it has been a subject of many …