Sensitivity Evaluation of AP1000 Nuclear Power Plant Best Estimation Model

Table 2

The influence of core channel node number on the reactor pressure drop.

Node number	Reactor inlet pressure (MPa)	Reactor outlet pressure (MPa)	Calculated reactor pressure drop (MPa)	Designed reactor pressure drop (MPa)	Fractional error
5	15.7545	15.3944	0.3601	0.43	16.26%
10	15.8342	15.4213	0.4129	0.43	3.98%
15	15.8947	15.3997	0.495	0.43	15.12%
20	15.9516	15.4006	0.551	0.43	28.14%
30	16.0739	15.6097	0.4642	0.43	7.95%
40	16.1328	15.6315	0.5013	0.43	16.58%
50	16.1675	15.6589	0.5086	0.43	18.28%