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Journal of Applied Fluid Mechanics، جلد ۱۳، شماره ۶، صفحات ۱۸۱۹-۱۸۳۳
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عنوان انگلیسی Passive Flow Control over an Airfoil by Control Rod at Low Reynolds Number
چکیده انگلیسی مقاله In the present study, the flow control mechanism of SD7062 airfoil by a rod illustrated using Particle image velocimetry (PIV) technique at pre-stall angles of attack at Reynolds number of Re = 30000. The rod was installed on the suction surface of the airfoil at different chordwise locations. Diameter of the rod was normalized with the chord length of the airfoil and three diameter ratios (d / c = 0.017, 0.033 and 0.044) were examined at angles of attack of α = 6°, 8° and 10°. Formation of laminar separation bubble for the baseline airfoil and the effect of rod on the laminar separation bubble were investigated in detail. It is observed that the height of boundary layer was reduced up to 22% by proper rod location and diameter ratio. Moreover, the rod suppressed the unsteady vortices over the suction surface of airfoil significantly. Therefore, the peak magnitudes of turbulent statistics were also decreased up to 30% by the rod.
کلیدواژه‌های انگلیسی مقاله Airfoil, Control rod, Flow control, Low Reynolds Number flow
نویسندگان مقاله T. Durhasan |
Aerospace Engineering Department, Adana Alparslan Turkes Science and Technology University, Adana, 01250, Turkey

نشانی اینترنتی https://www.jafmonline.net/article_1049_472974e2a7316202b705f3d16d14b440.pdf
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