Summation by Parts Operators for Finite Difference Approximations of Second-Derivatives with Variable Coefficients

Authors:
Ken Mattsson
Affiliations:
Uppsala University, Uppsala, Finland
Venue:
Journal of Scientific Computing
Year:
2012

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Abstract

Finite difference operators approximating second derivatives with variable coefficients and satisfying a summation-by-parts rule have been derived for the second-, fourth- and sixth-order case by using the symbolic mathematics software Maple. The operators are based on the same norms as the corresponding approximations of the first derivative, which makes the construction of stable approximations to general multi-dimensional hyperbolic-parabolic problems straightforward.