Efficient global sensitivity analysis of structural vibration for a nuclear reactor system subject to nonstationary loading

Gregory A. Banyay, Michael D. Shields, John C. Brigham

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The structures associated with the nuclear steam supply system (NSSS) of a pressurized water reactor (PWR) include significant epistemic and aleatory uncertainties in the physical parameters, while also being subject to various non-stationary stochastic loading conditions over the life of a nuclear power plant. To understand the influence of these uncertainties on nuclear reactor systems, sensitivity analysis must be performed. This work evaluates computational design of experiment strategies, which execute a nuclear reactor equipment system finite element model to train and verify Gaussian Process (GP) surrogate models. The surrogate models are then used to perform both global and local sensitivity analyses. The significance of the sensitivity analysis for efficient modeling and simulation of nuclear reactor stochastic dynamics is discussed.

Original languageEnglish (US)
Article number110544
JournalNuclear Engineering and Design
Volume361
DOIs
StatePublished - May 2020

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • General Materials Science
  • Safety, Risk, Reliability and Quality
  • Waste Management and Disposal
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Efficient global sensitivity analysis of structural vibration for a nuclear reactor system subject to nonstationary loading'. Together they form a unique fingerprint.

Cite this