UNCERTAINTY ANALYSIS OF TIME-DEPENDENT NONLINEAR SYSTEMS: THEORY AND APPLICATION TO TRANSIENT THERMAL HYDRAULICS.

J. BARHEN*, D. G. CACUCI, J. J. WAGSCHAL, M. A. BJERKE, C. B. MULLINS

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

AN IMPORTANT PART OF THE LIGHT WATER REACTOR (LWR) SAFETY RESEARCH PROGRAM IS CONCERNED WITH THE CAPABILITY OF ACCURATELY PREDICTING THERMAL HYDRAULIC PHENOMENA THAT MIGHT OCCUR DURING THE HYPOTHETICAL OCCURRENCE OF LOSS-OF-COOLANT ACCIDENTS (LOCAS). AN ADVANCED METHODOLOGY FOR PERFORMING SYSTEMATIC UNCERTAINTY ANALYSIS OF TIME-DEPENDENT NONLINEAR SYSTEMS IS PRESENTED. THIS METHODOLOGY IS APPLIED TO THE UNCERTAINTY ANALYSIS OF A TRANSIENT UPFLOW OF A HIGH PRESSURE WATER HEATTRANSFER EXPERIMENT. FOR COMPARISON, AN UNCERTAINTY ANALYSIS USING SENSITIVITIES COMPUTED BY STANDARD RESPONSE SURFACE TECHNIQUES IS ALSO PERFORMED. THE RESULTS OF THE ANALYSIS ARE PRESENTED.

Original languageAmerican English
Pages (from-to)23-44
Number of pages22
JournalNuclear Science and Engineering
VolumeV 81
Issue numberN 1
DOIs
StatePublished - 1982

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