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An efficient hybrid...
An efficient hybrid method for uncertainty quantification
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- Wahlsten, Markus, 1986- (author)
- Linköpings universitet,Beräkningsmatematik,Tekniska fakulteten
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- Nordström, Jan, 1953- (author)
- Linköpings universitet,Beräkningsmatematik,Tekniska fakulteten
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(creator_code:org_t)
- Linköping : Linköping University Electronic Press, 2018
- English 20 s.
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Series: LiTH-MAT-R, 0348-2960 ; 2018:3
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Abstract
Subject headings
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- A technique for coupling an intrusive and non-intrusive uncertainty quantification method is proposed. The intrusive approach uses a combination of polynomial chaos and stochastic Galerkin projection. The non-intrusive method uses numerical integration by combining quadrature rules and the probability density functions of the prescribed uncertainties. A strongly stable coupling procedure between the two methods at an interface is constructed. The efficiency of the hybrid method is exemplified using a hyperbolic system of equations, and verified by numerical experiments.
Subject headings
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
Keyword
- Uncertainty quantification
- numerical integration
- stochastic Galerkin
- polynomial chaos
- coupling
- projection operator
Publication and Content Type
- vet (subject category)
- rap (subject category)
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