این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Journal of Applied Fluid Mechanics، جلد ۱۷، شماره ۸، صفحات ۱۵۶۸-۱۵۹۲
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Numerical Analysis of the Kline and Fogleman Airfoil's Effect on the Operation of Straight Darrieus Wind Turbine
چکیده انگلیسی مقاله The blade profile selection is paramount for the efficient operation of straight Darrieus wind turbines in terms of torque and power generation. In this work, we have used the Kline-Fogleman Airfoil (KFA) design for the wind turbine blades. The concept of KFA design aims to cause flow separation, vortex formation, and reattachment establishment before the trailing edge. Thus, geometric tests on have been performed on the baseline airfoil NACA0015 as one of the best profiles for operating a straight Darrius wind turbine. A two-dimensional Computational Fluid Dynamic (CFD) model using the two-equation Shear Stress Transport k-ω (SST k-ω) turbulent model was developed in ANSYS/FLUENT software to assess the aerodynamic efficiency of the modified airfoil. Two designs (KFA-2 and KFA-4) were tested initially in the static case. The effects of the opening step angle and its curvature diameter were studied for an angle of attack’s range of -20° to +20°. The rounded KFA-4 design with an opening step angle of 93.6° led to a significant improvement in the lift-to-drag ratio thus, aerodynamic efficiency. Finally, the straight KFA-4 design with the opening step angle of 93.6° revealed a the most advantageous effects on the operation of a straight Darrieus wind turbine for a Tip Speed Ratio less than 1.6 (TSR<1.6). It allowed a noticeable reduction of the dead zone and TSR corresponding to the nominal power, thus consequently improving the starting torque and delaying torque stall.
کلیدواژه‌های انگلیسی مقاله Straight Darrieus wind turbine,Turbulence modeling,Computational fluid dynamics,Passive flow control,Aerodynamic coefficients,Dynamic stall
نویسندگان مقاله H. Iddou |
University of Science and Technology Houari Boumediene (USTHB), Bab Ezzouar, Algiers, 16111, Algeria

N. Nait Bouda |
University of Science and Technology Houari Boumediene (USTHB), Bab Ezzouar, Algiers, 16111, Algeria

A. Benaissa |
Royal Military College of Canada, Station Forces Kingston, Ontario, K7K 7B4, Canada

K. Zereg |
University of Batna1, Batna, Batna, 05000, Algeria

نشانی اینترنتی https://www.jafmonline.net/article_2442_4187f5d5e18612f23d8e3686dbbb313d.pdf
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات