TITLE

# Explicit Two-Step Peer Methods for the Compressible Euler Equations

AUTHOR(S)
Jebens, Stefan; Knoth, Oswald; Weiner, Rüdiger
PUB. DATE
July 2009
SOURCE
Monthly Weather Review;Jul2009, Vol. 137 Issue 7, p2380
SOURCE TYPE
DOC. TYPE
Article
ABSTRACT
A new time-splitting method for the integration of the compressible Euler equations is presented. It is based on a two-step peer method, which is a general linear method with second-order accuracy in every stage. The scheme uses a computationally very efficient forwardâ€“backward scheme for the integration of the high-frequency acoustic modes. With this splitting approach it is possible to stably integrate the compressible Euler equations without any artificial damping. The peer method is tested with the dry Euler equations and a comparison with the common split-explicit second-order three-stage Rungeâ€“Kutta method by Wicker and Skamarock shows the potential of the class of peer methods with respect to computational efficiency, stability, and accuracy.
ACCESSION #
43591035

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