Considering the breadth of the discipline and the challenges encountered in aerodynamically generated noise, it is not surprising that a number of computational approaches have been proposed over the years whose sophistication, applicability, and cost widely vary.

Ansys Fluent offers three approaches to computing aerodynamically generated noise: a direct approach, a hybrid approach, and an approach that utilizes broadband noise source models. Within the hybrid approach Fluent offers the two methods, which are the integral method by Ffowcs Williams and Hawkings [168] , and a differential sound propagation method based on a finite volume solver for a wave equation.