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On the stability of...
On the stability of the dual problem for high Reynolds number flow past a circular cylinder in two dimensions
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- Nazarov, Murtazo (författare)
- Texas A and M University, United States
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- Hoffman, Johan (författare)
- KTH,Numerisk analys, NA
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(creator_code:org_t)
- Society for Industrial & Applied Mathematics (SIAM), 2012
- 2012
- Engelska.
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Ingår i: SIAM Journal on Scientific Computing. - : Society for Industrial & Applied Mathematics (SIAM). - 1064-8275 .- 1095-7197. ; 34:4, s. A1905-A1924
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- In this paper we present a computational study of the stability of time dependent dual problems for compressible flow at high Reynolds numbers in two dimensions. The dual problem measures the sensitivity of an output functional with respect to numerical errors and is a key part of goal oriented a posteriori error estimation. Our investigation shows that the dual problem associated with the computation of the drag force for the compressible Euler/Navier-Stokes equations, which are approximated numerically using different temporal discretization and stabilization techniques, is unstable and exhibits blow-up for several Mach regimes considered in this paper.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences (hsv//eng)
Nyckelord
- Circular cylinder
- Dual equations
- Euler equations
- Goal-oriented error estimation
- Navier-Stokes equations
- Stability
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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