A finite volume-based high order Cartesian cut-cell method for computational aeroacoustics

A finite volume-based high-order scheme with optimized dispersion and dissipation characteristics in cooperation with the Cartesian cut-cell technique is presented for aeroacoustics computations involving geometric complexities and nonlinearities. The field equation is solved based on an optimized prefactored compact finite volume (OPC-fv) scheme. The cut-cell approach handles the boundary shape by sub-dividing the computational cells in accordance with the local geometric characteristics and facilitates the use of numerical procedures with a desirable level of accuracy. The resulting technique is assessed by several test problems that demonstrate satisfactory performance.