Analysis OF Flow-Induced Noise on airfoils with Using Aero Acoustic Analogy And RANS Modeling

Aerodynamic noise from turbulent boundary layers (TBL), also known as flow noise, is a fundamental topic in flow-induced noise. In this work, we focused on analyzing the unsteady flow structure and aero acoustic performance of an airfoil .The approach employs the unsteady CFD flow simulations in the near field of an airfoil and the FW-H integral method for the far field noise prediction. Similar or improved results are obtained both in the near-field (velocity profiles) and in the acoustic far-field (power spectral densities). This paper consists of three parts. The first part contains a brief description of the numerical basics of the RANS method. This is followed by two separated portion related to the aerodynamic and aero acoustic analysis of the simulation results Therefore, the present article intends to evaluate the ability of the two-dimensional URANS numerical solutions to predict the unsteady flow over the airfoil and its associated noise generated.