The fast Fourier transform based method (FFTBM) was proposed in the 1990s and is used for accuracy quantification of computer codes. FFTBM provides frequency-based measures for each single TH variables as well as the whole transient calculations. The measurement-prediction discrepancies in the frequency domain are assessed by the average amplitude (AA). An AA close to 0 indicates good agreement between measured and predicted results. AA is dependent to the proper selection of time windows, weighting factors, number of discrete data used. This paper summarized the application of FFTBM from publications in the last 30 years, including the relevant experimental tests, codes, number of selected parameters and AAtot, etc. It attempts to provide some insights and guidelines for FFTBM application.
Review of Application of FFTBM Method for Code Accuracy Quantification
D’Auria Francesco
Co-primo
Methodology
;
2022-01-01
Abstract
The fast Fourier transform based method (FFTBM) was proposed in the 1990s and is used for accuracy quantification of computer codes. FFTBM provides frequency-based measures for each single TH variables as well as the whole transient calculations. The measurement-prediction discrepancies in the frequency domain are assessed by the average amplitude (AA). An AA close to 0 indicates good agreement between measured and predicted results. AA is dependent to the proper selection of time windows, weighting factors, number of discrete data used. This paper summarized the application of FFTBM from publications in the last 30 years, including the relevant experimental tests, codes, number of selected parameters and AAtot, etc. It attempts to provide some insights and guidelines for FFTBM application.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
