What is it about?
Flexible structures can oscillate beyond the flutter onset velocity. If such oscillations reach high angles of attack, aerodynamic nonlinearities may drive the aeroelastic behavior, the so-called stall-induced oscillations. The present paper examines the harvested energy from stall-induced oscillations by considering different structural parameters of the harvester and Mach numbers between 0.3 and 0.7.
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Why is it important?
We modeled the aeroelastic behavior of stall-induced oscillations and then we made the assessment of the harvested power from such oscillations in a parametric study by considering different structural parameters. Moreover, the interval of Mach numbers considered accounts for the compressibility effects that can be observed in wind turbines or helicopter rotors.
Perspectives
I hope this article be helpful for the development of harvesters devices based on the transduction of stall-induced oscillations into electric power.
Carlos dos Santos
Universidade de São Paulo
Read the Original
This page is a summary of: Energy harvesting from stall-induced oscillations of pitching airfoils at high-subsonic regime, January 2018, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2018-0463.
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