Numerical Investigation of Gurney Flap Effects on Supercritical Airfoils for Transonic Speeds
محل انتشار: هجدهمین کنفرانس انجمن هوافضای ایران
سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 517
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شناسه ملی سند علمی:
AEROSPACE18_193
تاریخ نمایه سازی: 31 اردیبهشت 1399
چکیده مقاله:
Effects of a gurney flap was investigated on the supercritical NASA airfoil by solving two-dimensional Reynolds-averaged Navier–Stokes equations for a range of transonic Mach numbers and angle of attacks. It can be concluded that, the gurney flap has a remarkable influence on the aerodynamic coefficients (below the drag divergence Mach number) especially at -1 and 0 degrees angle of attack resulting in 50% increase in L/D ratio. At high Mach numbers and angle of attacks, Gurney flap loses its effects and the clean airfoil has better aerodynamic performance.
کلیدواژه ها:
Gurney Flap – Transonic flow – Supercritical Airfoil ، Lift Enhancement
نویسندگان
Amir Saman Rezaei
Ph.D. Student Mechanical and Aerospace Engineering, University of California Irvine, Irvine, CA, ۹۲۶۱۷, United states
Seyed Mohammad Jafar Sobhani
Ph.D. Student School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, ۱۱۱۵۵-۴۵۶۳, Iran
Amir Nejat
Associate Professor School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, ۱۱۱۵۵-۴۵۶۳, Iran