Development and Validation of a Three-Dimensional Diffusion Code Based on a High Order Nodal Expansion Method for Hexagonal- Geometry

Table 6

Relative power error of the HNHEX power distribution solution to DIF3D reference solution for three-dimensional VVER-440 problem (unit: %).

Assembly identity	Axial layer
	1 (bottom)	2	3	4	5	6	7	8	9	10 (top)
1	−0.96	−0.74	−0.63	−0.33	0.23	0.00	0.00	0.00	0.00	0.00
2	0.46	0.69	0.85	1.10	1.52	2.15	2.61	2.89	2.92	2.84
3	−0.52	−0.27	−0.12	0.04	0.31	0.79	1.03	1.14	1.26	1.12
4	−0.36	−0.10	0.03	0.17	0.41	0.82	1.09	1.12	1.23	1.10
5	0.31	0.54	0.69	0.84	1.07	1.54	1.71	1.85	1.93	1.82
6	0.12	0.36	0.48	0.71	1.08	1.46	1.68	2.10	2.07	2.01
7	−1.08	−0.82	−0.76	−0.50	−0.04	0.00	0.00	0.00	0.00	0.00
8	−1.25	−1.00	−0.91	−0.73	−0.48	−0.27	−0.18	0.15	0.15	0.03
9	−1.62	−1.27	−1.23	−1.14	−1.03	−0.82	−0.86	−0.72	−0.59	−0.85
10	−0.57	−0.21	−0.19	−0.14	−0.06	0.08	0.06	0.14	0.26	0.00
11	−0.50	−0.25	−0.10	0.08	0.36	0.90	1.17	1.30	1.40	1.27
12	0.48	0.72	0.87	1.01	1.27	1.68	1.97	1.99	2.11	1.96
13	−0.69	−0.44	−0.30	−0.17	0.07	0.47	0.71	0.76	0.87	0.71
14	−0.83	−0.59	−0.45	−0.29	−0.05	0.42	0.57	0.73	0.80	0.69
15	−0.94	−0.70	−0.59	−0.37	−0.04	0.27	0.51	0.84	0.83	0.72
16	−0.16	0.07	0.17	0.36	0.65	0.93	1.10	1.39	1.37	1.27
17	0.01	0.31	0.38	0.48	0.63	0.91	0.87	1.05	1.14	0.93
18	−1.06	−0.66	−0.64	−0.58	−0.49	−0.33	−0.36	−0.26	−0.11	−0.43
19	−2.81	−2.52	−2.50	−2.46	−2.38	−2.27	−2.35	−2.22	−2.11	−2.32
20	−0.66	−0.41	−1.11	−0.15	0.09	0.48	0.71	0.66	0.85	0.70
21	0.12	0.35	0.50	0.62	0.85	1.23	1.40	1.48	1.56	1.45
22	−0.11	0.10	0.24	0.37	0.56	0.92	0.98	1.13	1.19	1.07
23	−1.27	−1.05	−0.93	−0.81	−0.64	−0.30	−0.28	−0.13	−0.08	−0.23
24	−1.40	−1.15	−1.06	−0.97	−0.85	−0.59	−0.60	−0.50	−0.42	−0.61
25	−1.68	−1.33	−1.30	−1.25	−1.15	−0.98	−1.01	−0.91	−0.79	−1.06
26	−2.11	−1.77	−1.76	−1.72	−1.64	−1.53	−1.59	−1.48	−1.37	−1.62
27	−1.34	−1.15	−1.00	−0.90	−0.70	−0.35	−0.19	−0.18	−0.11	−0.21
28	−0.34	−0.14	−0.01	0.08	0.24	0.53	0.61	0.67	0.71	0.57
29	−0.38	−0.16	−0.06	0.01	0.14	0.36	0.42	0.46	0.51	0.35
30	0.14	0.44	0.50	0.55	0.65	0.81	0.83	0.88	0.95	0.72
31	−1.90	−1.55	−1.55	−1.50	−1.43	−1.32	−1.35	−1.27	−1.17	−1.44
32	−1.48	−1.25	−1.16	−1.10	−0.96	−0.76	−0.68	−0.66	−0.61	−0.77
33	−1.15	−0.88	−0.83	−0.77	−0.67	−0.52	−0.52	−0.44	−0.40	−0.61
34	−1.68	−1.32	−1.31	−1.27	−1.19	−1.08	−1.07	−1.01	−0.92	−1.22
35	−3.72	−2.66	−2.66	−2.62	−2.55	−2.46	−2.56	−2.40	−2.32	−2.54
36	−0.36	−0.01	0.00	0.04	0.12	0.22	0.21	0.29	0.35	0.08
37	−2.10	−1.76	−1.77	−1.73	−1.66	−1.59	−1.66	−1.54	−1.47	−1.71