Open AccessAerodynamic performance improvement using a micro-cylinder as a passive flow control around the S809 airfoil
Author(s) -
Wafaa Mostafa,
Abouelmagd Abdelsamie,
Mohamed H. Mohamed,
Dominique Thévenin,
Momtaz Sedrak
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/973/1/012040
Subject(s) - airfoil , aerodynamics , lift to drag ratio , turbine , lift (data mining) , drag , drag coefficient , flow control (data) , cylinder , reynolds number , mechanics , engineering , aerospace engineering , mechanical engineering , computer science , physics , turbulence , telecommunications , data mining
Aerodynamic performance improvement of airfoilsis the first step towards enhancement ofthe wind turbine performance in electricity generation and energy conversion inrenewable energy applications. The flow behavioraround wind turbine blades profilecan be improved by introducing active and/or passive flow controls. This work numerically describes the impact of adding micro-cylinder, as a passive flow control around S809 airfoil, on aerodynamic performance under various operating conditions. A suitable combination of flow analysis and optimization technique has been used in the current work.The numerical simulation has been performed using ANSYSFluent 18.2 software. The airfoil was numerically analysed in flow atReynolds number of 10 6 ; aerodynamic coefficients (lift and drag coefficients) at different angle of attacks were validated with the experimental data reported by Somers in NREL. The Response Surface Method (RSM) is applied to obtain the optimum position of micro-cylinder to achieve maximum lift to drag ratio. It has been found that the total aerodynamic forces are sensitive to the location of the micro-cylinder. A significant enhancement of lift to drag ratio can be achieved by adding micro-cylinder in front of S809 airfoil especially at high Reynolds number.