Cartesian boundary treatment of curved walls for high-order computational aeroacoustics schemes

摘要

It is known that the use of high-order central difference schemes on a Cartesian grid is preferable for the computation of acoustic wave propagation problems. The schemes tend to be less dispersive and dissipative than most other types of schemes. They are also more capable of providing an accurate wave speed. A Cartesian boundary treatment for problems involving the scattering of acoustic waves by solid objects with curved boundary surfaces, designed to be used in conjunction with such high-order central difference schemes, is proposed.