Sökning: onr:"swepub:oai:DiVA.org:liu-146036" >
An efficient hybrid...
An efficient hybrid method for uncertainty quantification
-
- Wahlsten, Markus, 1986- (författare)
- Linköpings universitet,Beräkningsmatematik,Tekniska fakulteten
-
- Nordström, Jan, 1953- (författare)
- Linköpings universitet,Beräkningsmatematik,Tekniska fakulteten
-
(creator_code:org_t)
- Linköping : Linköping University Electronic Press, 2018
- Engelska 20 s.
-
Serie: LiTH-MAT-R, 0348-2960 ; 2018:3
- Relaterad länk:
-
https://liu.diva-por... (primary) (Raw object)
-
visa fler...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics (hsv//eng)
Nyckelord
- Uncertainty quantification
- numerical integration
- stochastic Galerkin
- polynomial chaos
- coupling
- projection operator
Publikations- och innehållstyp
- vet (ämneskategori)
- rap (ämneskategori)