Investigation of a Coolant Mixing Phenomena within the Reactor Pressure Vessel of a VVER-1000 Reactor with Different Simulation Tools

Table 2

Main parameters of the four loops before the test.

Parameter	Initial state	Accuracy
Thermal power, MW	281	$\pm 60$
Pressure above core, MPa	15.593	$\pm 0.300$
Pressure drop over RPV, MPa	0.418	$\pm 0.043$
Coolant temperature at core inlet #1, K	541.75	$\pm 1.50$
Coolant temperature at core inlet #2, K	541.85	$\pm 1.50$
Coolant temperature at core inlet #3, K	541.75	$\pm 1.50$
Coolant temperature at core inlet #4, K	541.75	$\pm 1.50$
Coolant temperature at core outlet #1, K	545.00	$\pm 2.00$
Coolant temperature at core outlet #2, K	545.00	$\pm 2.00$
Coolant temperature at core outlet #3, K	544.90	$\pm 2.00$
Coolant temperature at core outlet #4, K	545.00	$\pm 2.00$
Mass flow rate of loop #1, kg/s	4737	$\pm 110$
Mass flow rate of loop #2, kg/s	4718	$\pm 110$
Mass flow rate of loop #3, kg/s	4682	$\pm 110$
Mass flow rate of loop #4, kg/s	4834	$\pm 110$