Accuracy and Uncertainty Analysis of PSBT Benchmark Exercises Using a Subchannel Code MATRA

Table 2

Geometry of test bundles for PSBT benchmark exercises.

Item	Data
Test bundle	B5/B6	B7	A0	A1	A2	A3	A4	A8
Type of experiment	Void	Void	DNB	Mix	DNB	DNB	DNB	DNB
Rod array	5×5	5×5	5×5	5×5	5×5	6×6	5×5	5×5
Number of heated rods	25	24	25	25	25	36	25	24
Number of thimble rods	0	1	0	0	0	0	0	1
Heated rod O.D.	9.50	9.50	9.50	9.50	9.50	9.50	9.50	9.50
Thimble rod O.D.	—	12.24	—	—	—	—	—	12.24
Heated rod pitch	12.60	12.60	12.60	12.60	12.60	12.60	12.60	12.60
Axial heated length	3658	3658	3658	3658	3658	3658	3658	3658
Flow channel inner width	64.9	64.9	64.9	64.9	64.9	77.5	64.9	64.9
Axial power shape	Uni/Cos	Cos	Uni	Uni	Uni	Uni	Cos	Cos
Number of MV spacers	7	7	5	7	7	7	7	7
Number of NMV spacers	2	2	2	2	2	2	2	2
Number of SS spacers	8	8	6	8	8	8	8	8
TS Cross-section (Figure 1)	(a)	(b)	(a)	(a)	(a)	—	(a)	(b)

Length: [mm].