2011
IMAACA 2011 Proceeding
Modeling of aerodynamic flutter on a NACA 4412 airfoil wind blade
Authors: Drishtysingh Ramdenee, H. Ibrahim , N.Barka , A.Ilinca
Abstract
Study of aeroelastic phenomena on wind turbines (WT) has become a very important issue when it comes to safety and economical considerations as WT tend towards gigantism and flexibility. At the Wind Energy Research Laboratory (WERL), several studies and papers have been produced, all focusing on computational fluid dynamics (CFD) approaches to model and simulate different aeroleastic phenomena. Despite very interesting obtained results; CFD is very costly and difficult to be directly used for control purposes due to consequent computational time. This paper, hence, describes a complementary lumped system approach to CFD to model flutter phenomenon. This model is based on a described Matlab-Simulink model that integrates turbulence characteristics as well as characteristics aerodynamic physics. From this model, we elaborate on flutter Eigen modes and Eigen values in an aim to apply control strategies and relates ANSYS based CFD modeling to the lumped system.
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