Uppsala University Department of Information Technology

Technical Report 2004-050

High Order Summation by Parts Operator Based on a DRP Scheme Applied to 2D Aeroacoustics

Stefan Johansson

October 2004

A strictly stable high order finite difference method based on Tam and Webb's dispersion relation preserving scheme in the interior has been verified for a 2D aeroacoustic problem. Results show that the method gives lower dispersion error than a similar method derived by Strand, which is based on standard sixth order difference approximation in the interior, when boundary effects are not important.

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Uppsala Universitet