A low-dispersion finite volume (LDFV) scheme on curvilinear meshes is devel
oped and applied to rotorcraft noise prediction. This scheme minimizes the
numerical dispersion errors that arise in modeling convection phenomena, wh
ile keeping dissipation errors small. It is accomplished by special high-or
der polynomials that interpolate the properties at the cell centers to the
Left and right sides of cell faces. A low-pass filter has also been impleme
nted that removes high-frequency oscillations near shock waves. This scheme
has been retrofitted into a version of the finite volume code TURNS. The m
odified solver, referred to as TURNS-LDFV, is shown to yield good results f
or high-speed impulsive noise applications. The LDFV scheme is also shown t
o be useful for capturing the blade-tip vortex core structure and its evolu
tion.