Analysis of NEA-NSC PWR Uncontrolled Control Rod Withdrawal at Zero Power Benchmark Cases with NODAL3 Code

Table 8

Effect of radial node number per FA for transient hot pellet results in Cases A, B, and D.

Parameters	Results	Reference	NODAL3 (node number per FA)
			1 × 1	2 × 2	4 × 4
Case A
Maximum fuel temperature at hot pellet centerline, °C	D6	631.8	629.2 (0.41%)	632.9 (0.17%)	632.9 (0.17%)
Case B
Maximum fuel temperature at hot pellet centerline, °C	D6	478.2	459.8 (3.85%)	460.9 (3.62%)	461.3 (3.53%)
Case D
Maximum fuel temperature at hot pellet centerline, °C	D6	451.4	459.8 (1.86%)	457.8 (1.42%)	458.2 (1.51%)

Note. The axial node number is 1 × 18 nodes per axial layer; number in parentheses are the absolute value of relative deviation of NODAL3 with the reference.