Stochastic Galerkin methods for the steady-state Navier–Stokes equations
Journal Article
·
· Journal of Computational Physics
- Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States); DOE Office of Scientific and Technical Information (OSTI)
- Univ. of Maryland, College Park, MD (United States)
We study the steady-state Navier–Stokes equations in the context of stochastic finite element discretizations. Specifically, we assume that the viscosity is a random field given in the form of a generalized polynomial chaos expansion. For the resulting stochastic problem, we formulate the model and linearization schemes using Picard and Newton iterations in the framework of the stochastic Galerkin method, and we explore properties of the resulting stochastic solutions. We also propose a preconditioner for solving the linear systems of equations arising at each step of the stochastic (Galerkin) nonlinear iteration and demonstrate its effectiveness for solving a set of benchmark problems.
- Research Organization:
- Univ. of Maryland, College Park, MD (United States)
- Sponsoring Organization:
- National Science Foundation; USDOE
- Grant/Contract Number:
- SC0009301
- OSTI ID:
- 1418535
- Alternate ID(s):
- OSTI ID: 22572324
OSTI ID: 1467148
- Journal Information:
- Journal of Computational Physics, Journal Name: Journal of Computational Physics Journal Issue: C Vol. 316; ISSN 0021-9991
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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