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Summation-by-Parts ...
Summation-by-Parts Operators with Minimal Dispersion Error for Coarse Grid Flow Calculations
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- Linders, Viktor (författare)
- Linköpings universitet,Beräkningsmatematik,Tekniska fakulteten
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- Kupiainen, Marco (författare)
- Rossby Centre SMHI, Norrköping, Sweden
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- Nordström, Jan (författare)
- Linköpings universitet,Beräkningsmatematik,Tekniska fakulteten
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(creator_code:org_t)
- Linköping : Linköping University Electronic Press, 2016
- Engelska 34 s.
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Serie: LiTH-MAT-R, 0348-2960 ; 2016:7
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Abstract
Ämnesord
Stäng
- We present a procedure for constructing Summation-by-Parts operators with minimal dispersion error both near and far from numerical interfaces. Examples of such operators are constructed and compared with purely periodic stencils as well as non-optimised Summation-by-Parts operators of higher order. Experiments show that the optimised operators are superior for wave propagation and turbulent flows involving large wavenumbers, long solution times and large ranges of resolution scales.
Ämnesord
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
Nyckelord
- Summation-by-Parts; Dispersion relation; Finite differences; Wave propagation
Publikations- och innehållstyp
- vet (ämneskategori)
- rap (ämneskategori)