CFD ANALYSIS OF RAE 2822 SUPERCRITICAL AIRFOIL AT TRANSONIC MACH SPEEDS

K.Harish Kumar, CH.Kiran Kumar, T.Naveen Kumar

Abstract: The Aerodynamic characteristics of an airfoil play a very important role in terms of design aspects and experimental validation. A distinctive supercritical airfoil is found to give inappropriate results at peak operating conditions. This led to design changes and optimization of the foil with the help of a cusp like structure added to the trailing edge of the foil. The present work emphasizes the computation of a supercritical airfoil with and without wedge profiles at different angles of attack and free stream velocities. The formation of a shock wave is observed when the free stream approaches a transonic mach number. This shock wave is a type of propagating disturbance which greatly effects the aerodynamic performance of the airfoil. The flow properties such as pressure, temperature and density experience a drastic change upstream and downstream of the generated shock. The main goal of the proposed paper is to carryout the simulation and analysis of RAE 2822 supercritical airfoil with and without wedge profiles along with the study of aerodynamic characteristics such as Lift and drag coefficients at different Mach numbers. The objective is to improve the stability of the airfoil when the flow approaches transonic Mach speeds. The design profile chosen is based upon existing literature studies.

Keywords: Supercritical Airfoil, Shock wave, Transonic mach, Mach number etc…

DOI: https://doi.org/10.15623/ijret.2015.0409047