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

Table 2

The calculation results of NODAL3 code for steady sate and transient problems.

Parameter	Case/core condition
	A1/HZP	A2/HFP	B1/HZP	B2/HFP
Critical boron concentration, ppm
PANTHER (1993)	567.7	1,160.6	1,254.6	1,189.4
PANTHER (1997)	561.2	1,156.6	1,248.0	1,183.8
NODAL3 (adiabatic)	563.0	1,151.7	1,253.0	1,179.3
NODAL3 (quasistatic)	563.0	1,151.7	1,253.0	1,179.3
Time of power peak, s
PANTHER (1993)	0.560	0.100	0.517	0.120
PANTHER (1997)	0.538	0.095	0.523	0.100
NODAL3 (adiabatic)	0.566	0.099	0.501	0.126
NODAL3 (quasistatic)	0.579	0.100	0.507	0.121
Power peak
PANTHER (1993)	1.18	1.080	2.44	1.063
PANTHER (1997)	1.27	1.083	2.32	1.064
NODAL3 (adiabatic)	1.17	1.076	2.73	1.055
NODAL3 (quasistatic)	1.15	1.076	2.67	1.055
Final power (at 5 s)
PANTHER (1993)	0.196	1.035	0.32	1.038
PANTHER (1997)	0.197	1.036	0.32	1.039
NODAL3 (adiabatic)	0.190	1.032	0.31	1.033
NODAL3 (quasistatic)	0.190	1.032	0.31	1.033
Final average Doppler temperature (at 5 s), °C
PANTHER (1993)	324.30	554.60	349.9	552.0
PANTHER (1997)	324.90	555.20	350.0	552.4
NODAL3 (adiabatic)	323.26	555.71	349.1	552.2
NODAL3 (quasistatic)	323.17	555.83	348.9	552.5
Maximum fuel temperature (at 5 s), °C
PANTHER (1993)	673.3	1,691.8	559.8	1,558.1
PANTHER (1997)	679.3	1,679.6	559.7	1,576.1
NODAL3 (adiabatic)	659.6	1,699.1	554.9	1,598.0
NODAL3 (quasistatic)	658.5	1,699.0	554.1	1,598.0
Final coolant outlet temperature (at 5 s), °C
PANTHER (1993)	293.1	324.6	297.6	324.5
PANTHER (1997)	293.2	324.9	297.7	324.8
NODAL3 (adiabatic)	308.7	335.1	303.1	334.6
NODAL3 (quasistatic)	308.7	335.1	303.0	334.6