Analysis of Subchannel and Rod Bundle PSBT Experiments with CATHARE 3

Table 4

Results of 6 series of DNB simulations in rod bundles.

Bundle	Rods	Spacers	Radial power	Axial power	Calculated tests	Predicted power	Std dev	Small flow rate tests
A0	5×5	13	A	Uniform	9	96.80%	6.24%	0
A2	5×5	17	A	Uniform	11	87.70%	17.04%	2, overpredicted
A3	𝟔×𝟔	17	D	Uniform	8	79.46%	3.90%	0
A4	5×5	17	A	Cosine	20	78.44%	3.07%	2, over 5 std dev
A4	5×5	17	A	Cosine	27	78.50%	3.72%	0
A8	5×5	17	B (thimble)	Cosine	24	81.79%	8.70%	2, overpredicted