Stabilized FE simulation of prototype thermal-hydraulics problems with integrated adjoint-based capabilities [electronic resource].
- Washington, D.C. : United States. Office of the Assistant Secretary for Nuclear Energy, 2016. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 321-341 : digital, PDF file
- Additional Creators:
- Sandia National Laboratories, United States. Office of the Assistant Secretary for Nuclear Energy, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- A critical aspect of applying modern computational solution methods to complex multiphysics systems of relevance to nuclear reactor modeling, is the assessment of the predictive capability of specific proposed mathematical models. The understanding of numerical error, the sensitivity of the solution to parameters associated with input data, boundary condition uncertainty, and mathematical models is critical. Additionally, the ability to evaluate and or approximate the model efficiently, to allow development of a reasonable level of statistical diagnostics of the mathematical model and the physical system, is of central importance. In our study we report on initial efforts to apply integrated adjoint-based computational analysis and automatic differentiation tools to begin to address these issues. The study is carried out in the context of a Reynolds averaged Navier–Stokes approximation to turbulent fluid flow and heat transfer using a particular spatial discretization based on implicit fully-coupled stabilized FE methods. We present the initial results that show the promise of these computational techniques in the context of nuclear reactor relevant prototype thermal-hydraulics problems.
- Published through SciTech Connect., 05/20/2016., "sand2016--12353j", "649724", Journal of Computational Physics 321 C ISSN 0021-9991 AM, and J. N. Shadid; T. M. Smith; E. C. Cyr; T. M. Wildey; R. P. Pawlowski.
- Funding Information:
- AC04-94AL85000 and AC05-00OR22725
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