Investigation of Flow Field in Deep Dynamic Stall over an Oscillating NACA ۰۰۱۲ Airfoil
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 152
فایل این مقاله در 7 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JAFM-12-3_018
تاریخ نمایه سازی: 15 دی 1400
چکیده مقاله:
This paper presents the investigation on the phenomenon of a deep dynamic stall at the Reynolds number of the order of ۱۰۵ over an oscillating NACA ۰۰۱۲ model. Wind tunnel experiments are conducted to investigate the aerodynamic characteristics of the upstroke and downstroke phase associated with the sinusoidal pitching motion of the airfoil using the technique of surface pressure measurements and Particle Image Velocimetry. The validation of the lift curve slope of upstroke and downstroke with the Prandtl’s thin airfoil theory reveals the fact of massive flow separation during the deep dynamic stall regime. Numerical simulations are performed using Reynolds averaged Navier Stokes turbulence models such as RNG K-є and SST models. The data obtained from these models have been compared with the experimental data to investigate the aerodynamic features of the deep dynamic stall regime. The comparison shows that the URANS with K-ε model is in good agreement with the experimental data within the reasonable regime.
کلیدواژه ها:
نویسندگان
D. Surekha R. S.
Rajalakshmi Engineering College, Chennai, TamilNadu, India
A. Khandelwal
Department of Aerospace Engineering, IIT Kanpur, Kanpur, Uttar Pradesh, India
R. Rajasekar
Excel Engineering College, TamilNadu, India