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Michael S. Selig – One of the best experts on this subject based on the ideXlab platform.
Low Reynolds Number Airfoils for Small Horizontal Axis Wind ThrbinesWind Engineering, 1997Co-Authors: Philippe Giguere, Michael S. SeligAbstract:
To facilitate the Airfoil Selection process for small horizontal-axis wind turbines, an extensive database of low Reynolds number Airfoils has been generated. The database, which consists of lift and drag data, was obtained from experiments conducted in the same wind tunnel testing facility. Experiments with simulated leading-edge roughness were also performed to model the effect of blade erosion and the accumulation of roughness elements, such as insect debris, on Airfoil performance. Based on the lift curves and drag polars, guidelines that should be useful in selecting appropriate Airfoils for particular blade designs are given. Some of these guidelines are also applicable to larger HAWTs.
Joseph Samuel Becar – One of the best experts on this subject based on the ideXlab platform.
A Collaborative Conceptual Aircraft Design Environment for the Design of Small-Scale UAVs in a Multi-University Setting53rd AIAA Aerospace Sciences Meeting, 2015Co-Authors: Joseph Samuel BecarAbstract:
The development of a collaborative design tool for the generation and evaluation of small-scale electric-powered UAV concepts in a multi-university, multi-disciplinary setting is presented. The integrated design and optimization software CCADE (Collaborative Conceptual Aircraft Design Environment) enables the immersion of team members from different universities in a software environment which shares design information and analysis results in a central database. Input files for use by open-source analysis tools are automatically generated, and output files read in and displayed in a user-friendly graphical interface. Analysis codes for initial sizing, geometry, Airfoil Selection, aerodynamics, propulsion, stability and control, and structures are included. CCADE increased the volume of concepts which can be evaluated by student teams, increased the quality of designs produced, and contributed to shorter lead time to preliminary and detailed design.
Dhruv Suri – One of the best experts on this subject based on the ideXlab platform.
Design and Optimisation of a Low Reynolds Number Airfoil for Small Horizontal Axis Wind TurbinesIOP Conference Series: Materials Science and Engineering, 2018Co-Authors: Jayakrishnan Radhakrishnan, Dhruv SuriAbstract:
Horizontal axis wind turbines (HAWTs) are scaled down to incorporate rotor blades that usually have a diameter ranging from two to four meters in length. A common misconception with regard to Selection of Airfoils followed by subsequent designing of rotor blades involves the
use of NACA Airfoils and other conventional high Reynolds number Airfoils. Micro horizontal axis wind turbines usually operate at low Reynolds number conditions along the blade length. Conventional aerodynamic schemes cannot be applied to rotor blades operating under low Reynolds number conditions as compared to those occurring under high Reynolds number conditions since certain unusual aerodynamic phenomena predominate in the case of the former.
The efficiency of a wind turbine is largely dependent on blade optimization, which is why Airfoil Selection of the rotor blade is of considerable importance. The difference between high and low Reynolds number operation is the onset of boundary layer transition. In the case of high Reynolds
number operation, as is the case of aircraft propellers and other high speed turbines, boundary layer transition takes place before laminar separation, which is in direct contrast to low Reynolds number boundary layer phenomena, wherein laminar separation takes place before boundary layer transition