Subsonic aircraft wing performance at transonic speeds and at different turbulent intensity levels

Aircraft’s both for combat and civil purpose work under different environment conditions, especially when it is a combat Aircraft or a jet trainer it will be more often subjected to high level of turbulence due to max manoeuvring and shorter runway takeoff operations. The environment conditions at which civil and combat aircraft operates are unpredictable and will change from one location to other based on weather and climate conditions. In this paper the lift and drag coefficient of a finite 3D wing of a subsonic Aircraft is presented at transonic speed conditions and at different turbulence intensity levels. 3D wing is of NACA 2412 profile. The results obtained by this work on subsonic wing can be used to compare the performance of this subsonic wing with respect to performance of Transonic and supersonic wings. A overview of Transonic aerodynamics and the Turbulence model used is presented in this paper. This subsonic wing is analyzed using K-ω SST Turbulence model and for two different AOA of 00 and 40. The Mach number of flow over the wing and the pressure plot at the wing symmetric plane at different aircraft speed and at different turbulence intensity levels are discussed in this paper. CFD software Ansys Fluent is used to analyze the aircraft wing at two different AOA and at two different transonic speeds.