THERMAL SCIENCE

International Scientific Journal

A CFD ANALYSIS OF CONTROLLED FLUTTER PHENOMENON

ABSTRACT
In the present study, the concept of aero elastic wind energy generator is utilized wind turbines and it applied to produce electricity at low wind speeds. Flutter is the mechanism of dynamic instability in which the energy can be extracted from the wind. This energy might possibly transform into electric power. A straight rectangular wing with single degree of freedom at stalling angle is employed to do suitable work for producing power. A computational model of aero elastic wind energy generator is developed by using ICEM CFD and the flow analysis is carried out at different speeds for the prediction of co-efficient of power for the proposed device. Further a small model is experimentally fabricated and tested in a wind tunnel with different velocities using non-linear theory to predict the power co-efficient of a model. The test results from experiment are compared with the computational results. Thus it is evident that the correlated results are accurate within the acceptable range. The input from the flow analysis is used for structural analysis in ANSYS. The frequency, amplitude of oscillation and phase response of the proposed system can be obtained and it compared with the numerical values from MATLAB simulation of the same system to ensure for obtaining sustained oscillation which is capable of producing power. The flutter mechanism is having the advantage of producing power at very low velocity, eventhough low efficiency.
KEYWORDS
PAPER SUBMITTED: 2015-09-12
PAPER REVISED: 2016-01-07
PAPER ACCEPTED: 2016-02-25
PUBLISHED ONLINE: 2016-11-13
DOI REFERENCE: https://doi.org/10.2298/TSCI16S4955T
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Supplement 4, PAGES [S955 - S965]
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© 2020 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence