Abstract
Dynamic stall is a process that occurs when the angle of attack of airfoils exceeds the critical value which leads to fluctuation of aerodynamic loads and loss of performance of streamlined bodies like wind turbines and helicopters as a result of boundary layer separation. This review presents dynamic stall control methods in the oscillating airfoil. Airfoil shape modification and momentum blowing on a boundary layer were the focus of this paper. From the review, it was found that making the leading edge of an airfoil to change its shape dynamically, can help to alleviate dynamic stall in different flow conditions. Similarly, energizing the boundary layer of the flow by momentum blowing both steadily and unsteadily was found to be effective in dynamic stall control while the latter was superior. From the review, it was shown that whatever methods were applied to control dynamic stall, the effectiveness of those methods depend on other parameters too like reduced frequency.
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This work acknowledged professor Siva & Dr. Shoeb for giving their helpful comments.
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© 2019 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Adera, A., Ramakrishnan, S. (2019). Review on Dynamic Stall Control in Airfoils. In: Zimale, F., Enku Nigussie, T., Fanta, S. (eds) Advances of Science and Technology. ICAST 2018. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 274. Springer, Cham. https://doi.org/10.1007/978-3-030-15357-1_32
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DOI: https://doi.org/10.1007/978-3-030-15357-1_32
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