Numerical Experiments Of Aerofoil Noise: The Role Of Direct Numerical Simulations In Understanding And Controlling Noise

Abstract

Aerofoil self-noise is the noise produced by the interaction between an aerofoil with its own boundary layers and wake and is of concern as it is an important contributor to the overall noise in many applications, e.g. wind turbines, cooling fan blades, or air frames. The continued growth of available computing power has made direct numerical simulations (DNS) of compressible flows with application to aerofoil noise possible. In this review paper, challenges associated with such simulations and numerical details of a DNS code that is able to exploit modern high-performance computing systems are presented. DNS data of flow at moderate Reynolds number are used to evaluate the accuracy of appro..