Science and Technology of Nuclear Installations

Research Article

The Verification of Coupled Neutronics Thermal-Hydraulics Code NODAL3 in the PWR Rod Ejection Benchmark

Table 4

Maximum deviations of ANCK and NODAL3 compared to the reference solution in 1997 [27].
ParameterMaximum deviation (%)
Critical boron concentration, ppm 
 ANCK0.75
 NODAL3 (adiabatic)0.42
 NODAL3 (quasistatic)0.42
Time of power peak, s 
 ANCK 5.26
 NODAL3 (adiabatic)26.00
 NODAL3 (quasistatic)21.00
Power peak 
 ANCK5.17
 NODAL3 (adiabatic)17.67
 NODAL3 (quasistatic)15.09
Final power (at 5 s) 
 ANCK2.54
 NODAL3 (adiabatic)3.55
 NODAL3 (quasistatic)3.55
Final average Doppler temperature (at 5 s), °C 
 ANCKNot available
 NODAL3 (adiabatic)0.51
 NODAL3 (quasistatic)0.53
Maximum fuel temperature (at 5 s), °C 
 ANCK1.43
 NODAL3 (adiabatic)2.90
 NODAL3 (quasistatic)3.06
Final coolant outlet temperature (at 5 s), °C 
 ANCKNot available
 NODAL3 (adiabatic)5.29
 NODAL3 (quasistatic)5.29