Abstract
Thanks to a massive innovation of computers, tens of methods for computational aeroacoustics (CAA) are available nowadays, and are used as promising tools for the design of aircrafts, high speed trains, automobiles and so on. In this paper, a hybrid approach of CAA based on vortex sound theory is summarized and applied to a low Mach number problem. First incompressible turbulent flow around a cylinder is calculated by the large eddy simulation (LES), and then its results are coupled with shape-adapted Green's functions which are solved by boundary element method (BEM). Aeroacoustic noise from the cylinder is simulated as an example, and both sound pressure at a far field and sound sources in the flow are estimated.
