Research Article
Data-Driven and Precursor-Group Uncertainty Propagation of Lattice Kinetic Parameters in UAM Benchmark
Table 5
Comparison of the kinetic parameters evaluation for a PWR pin-cell (BOL) when considering correlated U-235 thermal DND with the uncorrelated case.
| Parameter | Uncorrelated case | Correlated case | Mean | | Std/mean(%) | Mean | | Std/mean(%) |
| | 2.120E-04 | 1.533E-05 | 7.2 | 2.123E-04 | 3.894E-06 | 1.8 | | 1.419E-03 | 4.883E-05 | 3.4 | 1.418E-03 | 9.279E-06 | 0.7 | | 1.299E-03 | 9.208E-05 | 7.1 | 1.300E-03 | 2.901E-05 | 2.2 | | 2.708E-03 | 6.466E-05 | 2.4 | 2.706E-03 | 2.023E-05 | 0.8 | | 8.949E-04 | 4.568E-05 | 5.1 | 8.958E-04 | 1.837E-05 | 2.1 | | 3.005E-04 | 3.798E-05 | 12.6 | 3.013E-04 | 7.592E-06 | 2.5 | | 1.250E-02 | 2.368E-04 | 1.9 | 1.249E-02 | 5.430E-05 | 0.4 | | 3.081E-02 | 7.729E-04 | 2.5 | 3.082E-02 | 1.887E-04 | 0.6 | | 1.149E-01 | 3.278E-03 | 2.9 | 1.150E-01 | 1.051E-03 | 0.9 | | 3.100E-01 | 9.152E-03 | 3.0 | 3.100E-01 | 3.224E-03 | 1.0 | | 1.228E+00 | 1.029E-01 | 8.4 | 1.233E+00 | 3.161E-02 | 2.6 | | 3.319E+00 | 2.410E-01 | 7.3 | 3.305E+00 | 1.108E-01 | 3.4 |
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All kinetic parameters’ uncertainties in this table are caused by DND uncertainty ONLY. The cross-section uncertainties are not propagated. |