Subchannel Analysis of Wire Wrapped SCWR Assembly

Table 1

Fuel assembly geometry parameters.

Parameters	Values
Fuel rod outer diameter	8.00 mm
Fuel rod pitch	9.44 mm
Pitch/diameter ratio (𝑃/𝐷)	1.18
Active height	4200 cm
Total height	4710 cm
Wire diameter	1.34 mm
Wire pitch	200 mm
Moderator box length	26.9 mm
Moderator box wall thickness	0.8 mm
Outside box length	72.5 mm
Outside box wall thickness	2.5 mm
Gap between fuel rod and box wall	1.43 mm
0.5 gap around one fuel assembly	5.0 mm