CFD-Based Comparison of Flutter Effect in Supersonic Wing Designs at Steady Aerodynamic Condition

Abstract

Abstract This paper presents a numerical methodology and analysis to study the flutter, a self-exciting oscillation that generally occurs on wings at high speeds; Simply termed as twist along its axis of stiffness. The study focuses to understand the interaction between aerodynamic forces and the structural flexibility of the wing, which can lead to the flutter. After conducting a detailed study of flutter, an unstable aeroelastic phenomenon. Fluttering under steady aerodynamic conditions are similar to the conventional results of unsteady aerodynamics. This phenomenon is possible if the wing is designed to correspond with thin air-foil theory, which involves a minimal thickness of the wing. For investigation, Design and High-precision CFD simulations were conducted using ANSYS(FLUENT) to analyse the effects of lift and drag for various AOAs, flowlines, vortices and shock wave propagation. Analysis was also performed to observe the static deformation of the design due to the aerodynamic loading (Fluid-Structure interaction).