High order numerical simulation of sound generated by the Kirchhoff vortex

Authors

Bernhard Müller, Uppsala UniversityFollow
Helen C. Yee, NASA Ames Research CenterFollow

Date of this Version

2002

Citation

Comput Visual Sci 4: 197–204 (2002).

Comments

U.S. government work.

Abstract

An improved high order finite difference method for low Mach number computational aeroacoustics (CAA) is described. The improvements involve the conditioning of the Euler equations to minimize numerical cancellation errors, and the use of a stable non-dissipative sixth-order central spatial interior scheme and a third-order boundary scheme. Spurious high frequency oscillations are damped by a third-order characteristic-based filter. The objective of this paper is to apply these improvements in the simulation of sound generated by the Kirchhoff vortex.