Comparative Analysis of CTF and Trace Thermal-Hydraulic Codes Using OECD/NRC PSBT Benchmark Void Distribution Database
Table 7
Assembly data for assemblies B5, B6, and B7.
Item
Data
Assembly
Rods array
5 × 5
5 × 5
5 × 5
Number of heated rods
25
25
24
Number of thimble rods
0
0
1
Heated rod outer diameter (mm)
9.50
9.50
9.50
Thimble rod outer diameter (mm)
—
—
12.24
Heated rods pitch (mm)
12.60
12.60
12.60
Axial heated length (mm)
3658
3658
3658
Flow channel inner width (mm)
64.9
64.9
64.9
Radial power shape
A
A
B
Axial power shape
Uniform
Cosine
Cosine
Number of MV spacers
7
7
7
Number of NMV spacers
2
2
2
Number of simple spacers
8
8
8
MV spacer location (mm)
471, 925, 1378, 1832, 2285, 2739, 3247
NMV spacer location (mm)
2.5, 3755
Simple spacer location (mm)
237, 698, 1151, 1605, 2059, 2512, 2993, 3501
White circle: heated rod; Dark circle: thimble rod; MV: mixing vane; NMV: no mixing vane. Spacer location is distance from bottom of heated length to spacer bottom face.
