Numerical Study of the Steady-State Subchannel Test-Case with NEPTUNE_CFD for the OECD/NRC NUPEC PSBT Benchmark

Table 3

Characteristics of the grids used in the simulations.

	Grid level 1	Grid level 2	Grid level 3
Total number of cells	154,812	602,040	1,561,152
Number of cells in the axial direction	400	520	520
Number of cells in a cross-section	388	1160	3008
Cell size in the axial direction	4 mm	3 mm	3 mm
Distance-to-wall of the boundary-cell centers	0.25 mm	0.15 mm	0.1 mm