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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 (author)
- Linköpings universitet,Beräkningsmatematik,Tekniska fakulteten
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- Kupiainen, Marco (author)
- Rossby Centre SMHI, Norrköping, Sweden
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- Nordström, Jan (author)
- Linköpings universitet,Beräkningsmatematik,Tekniska fakulteten
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(creator_code:org_t)
- Elsevier, 2017
- 2017
- English.
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In: Journal of Computational Physics. - : Elsevier. - 0021-9991 .- 1090-2716. ; 340, s. 160-176
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Abstract
Subject headings
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- 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 a higher order non-optimised Summation-by-Parts operator. 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.
Subject headings
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
Keyword
- Summation-by-Parts
- Dispersion relation
- Finite differences
- Wave Propagation
Publication and Content Type
- ref (subject category)
- art (subject category)
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