کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7117234 | 1461317 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Control of a turbulent flow separated at mid-chord along an airfoil with DBD plasma actuators
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Control of a turbulent flow separated at mid-chord along an airfoil with DBD plasma actuators Control of a turbulent flow separated at mid-chord along an airfoil with DBD plasma actuators](/preview/png/7117234.png)
چکیده انگلیسی
The goal of the present experimental study is to investigate the ability of surface DBD plasma actuators to delay flow separation along the suction side of a NACA0015 airfoil. Three single surface DBD actuators that can operate separately are mounted on the suction side of the profile, at 18%, 27% and 37% of the chord length. The boundary layer is transitioned by a tripper to be sure that the flow control is not due to the laminar-to-turbulent transition. The angle of attack is equal to 11.5° and the free-stream velocity to U0 = 40 m/s, resulting in a chord-based Reynolds number of Rec = 1.33 Ã 106. The flow is studied with a high-resolution PIV system. In such conditions, the baseline flow separation occurs at 50% of chord. Then, the different single DBD have been switched on separately, in order to investigate the actuator location effect. One highlights that the DBD located at xc/c = 18% is more effective than the two others ones, with a separation delay up to 64% of chord. When the three DBDs operate simultaneously, the separation point moves progressively toward the trailing edge when the high voltage is increased, up to 76% of chord at 20 kV. Finally, the effect of the actuation frequency on the control authority has been investigated, by varying the value of the operating frequency and by burst-modulation. For frequencies equal to 50 Hz and 500 Hz (reduced frequency F+ = 0.31 and 3.1), the separation has been delayed at 76 and 80% of chord, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electrostatics - Volume 83, October 2016, Pages 78-87
Journal: Journal of Electrostatics - Volume 83, October 2016, Pages 78-87
نویسندگان
Eric Moreau, Antoine Debien, Jean-Marc Breux, Nicolas Benard,