Methodological Aspects of Statistical Analysis of the Sensitivity of TNPP Dynamics in Thermohydraulic Calculations

Aspects of the correlation analysis of sensitivity are considered in the context of the GRS method for dynamic processes. It is shown on test problems that sensitivity analysis can be inaccurate in case of oscillatory processes or processes characterized by phase shifts. It is proposed that in such...

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Bibliographic Details
Published inAtomic energy (New York, N.Y.) Vol. 132; no. 2; pp. 102 - 109
Main Authors Gritsai, A. S., Kurtometova, O. V.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.06.2022
Springer
Springer Nature B.V
Subjects
Correlation analysis
Energy industry
Extreme values
Hadrons
Heavy Ions
Nuclear Chemistry
Nuclear Energy
Nuclear Physics
Nuclear power plants
Physics
Physics and Astronomy
Sensitivity analysis
Statistical analysis
Test stands
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Summary:Aspects of the correlation analysis of sensitivity are considered in the context of the GRS method for dynamic processes. It is shown on test problems that sensitivity analysis can be inaccurate in case of oscillatory processes or processes characterized by phase shifts. It is proposed that in such cases the sensitivity analysis can be made more reliable by analyzing extreme values at selected time intervals of the process under study. This method is illustrated on the determination of dominant model parameters of the KORSAR software on modeling of a standard problem of the safety of ISP-27 on the BETHSY integrated test stand.
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-023-00911-w