@inproceedings{601c92ea9feb4da6bae5e9ccf7486c33,
title = "Non-sinusoidal forms of effective angle of attack variation and multiple vortex formations for a pitching and plunging airfoil",
abstract = "Non-sinusoidal form of the effective angle of attack variation for a pitching and plunging airfoil is investigated using the Digital Particle Image Velocimetry (DPIV) technique to observe multiple vortex formation which degrades performance significantly in regimes of high thrust. A detailed categorization of separated vortex structures from the leading and trailing edges of a SD7003 airfoil was already performed in the Strouhal number range of 0.4 ≤ St ≤ 0.8 where sinusoidal forms of the effective angle of attack variation was observed. It is concluded that the Strouhal number is not the only parameter for the non-sinusoidal form of the effective angle of attack variation and there exists a threshold for the maximum effective angle of attack value, below where additional components at higher frequency appear. In this study, the occurrence of multiple vortex formations caused by non-sinusoidal form of effective angle of attack variation is investigated based on the classification of flow structure categories at a low Reynolds number range which is typical of small birds and potential MAVs.",
author = "Idil Fenercioglu and Oksan Cetiner",
year = "2013",
doi = "10.2514/6.2013-90",
language = "English",
isbn = "9781624101816",
series = "51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013",
publisher = "American Institute of Aeronautics and Astronautics Inc.",
booktitle = "51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013",
note = "51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 ; Conference date: 07-01-2013 Through 10-01-2013",
}