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Stochastic Galerkin methods for the steady-state Navier–Stokes equations

Journal Article · · Journal of Computational Physics
 [1];  [2]
  1. Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States); DOE Office of Scientific and Technical Information (OSTI)
  2. 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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An efficient algorithm for simulating ensembles of parameterized flow problems journal May 2018

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