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Numerical Investigation of Gurney Flap Effects on Supercritical Airfoils for Transonic Speeds

Publish place: The 18th International Conference of Iranian Aerospace Society
Publish Year: 1398
Type: Conference paper
Language: English
View: 639

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Link to this Paper:
https://civilica.com/doc/1015347

Document National Code:

AEROSPACE18_193

Index date: 20 May 2020

Numerical Investigation of Gurney Flap Effects on Supercritical Airfoils for Transonic Speeds abstract

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.

Numerical Investigation of Gurney Flap Effects on Supercritical Airfoils for Transonic Speeds Keywords:

Gurney Flap , Transonic flow , Supercritical Airfoil , Lift Enhancement

Numerical Investigation of Gurney Flap Effects on Supercritical Airfoils for Transonic Speeds authors

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