Abstract
The effects of jet width on blowing and suction flow control were evaluated for a NACA 0012 airfoil. RANS equations were employed in conjunction with a Menter’s shear stress turbulent model. Tangential and perpendicular blowing at the trailing edge and perpendicular suction at the leading edge were applied on the airfoil upper surface. The jet widths were varied from 1.5% to 4% of the chord length, and the jet velocity was 0.3 and 0.5 of the free-stream velocity. Results of this study demonstrated that when the blowing jet width increases, the lift-to-drag ratio rises continuously in tangential blowing and decreases quasi-linearly in perpendicular blowing. The jet widths of 3.5% and 4% of the chord length are the most effective amounts for tangential blowing, and smaller jet widths are more effective for perpendicular blowing. The lift-to-drag ratio improves when the suction jet width increases and reaches its maximum value at 2.5% of the chord length.
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Kianoosh Yousefi received his B.Sc. and M.Sc. degrees in Mechanical Engineering from Islamic Azad University, Mashhad Branch, Iran in 2009 and 2013, respectively, with great distinction. His research interests include aerodynamics, fluid mechanics, multiphase flows, and combustion. Mr. Yousefi’s primary research focus is currently the active/passive flow control methods and turbulent flows.
S. Reza Saleh received his B.Sc. and M.Sc. degrees in Mechanical Engineering from Ferdowsi University, Iran in 1994 and 1997, respectively. He then received his Ph.D. in Mechanical Engineering — Energy conversion from Ferdowsi University, Iran in 2002. Dr. Saleh is currently an Assistant Professor of Mechanical Engineering Department at Islamic Azad University, Mashhad Branch, Iran. Dr. Saleh’s research interests include computational fluid dynamics, similarity, and exact solution.
Peyman Zahedi received his M.Sc. degree in Mechanical Engineering in February 2013 from Islamic Azad University, Mashhad Branch, Iran. His research interests include combustion, multiphase flows, computational fluid dynamics, and flow control techniques.
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Yousefi, K., Saleh, R. & Zahedi, P. Numerical study of blowing and suction slot geometry optimization on NACA 0012 airfoil. J Mech Sci Technol 28, 1297–1310 (2014). https://doi.org/10.1007/s12206-014-0119-1
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DOI: https://doi.org/10.1007/s12206-014-0119-1