CFD Applications to Pressurized Thermal Shock-Related Phenomena

Table 1

Large-scale experimental facilities for PTS experimental projects.

	ROCOM test facility (HZDR)	TOPFLOW test facility (HZDR)	UPTF (BMFT-KWU)	LSTF (JAEA)
Scaling	1 : 5 (since the loop volume is scaled to 1 : 125, the coolant transition time matches the actual reactor)	1 : 25	1 : 1	1 : 48 in actual volume, 1 : 1 scale in actual height
Targeted reactor	Four-loop KONVOI-type reactor	EDF CPY 900 MWe PWR	Four-loop 1300 MWe Siemens/KWU PWR	1100 MW class Westinghouse-type PWR
Maximum pressure	N/A	7 MPa	2.2 MPa	15.7 MPa
Targeted phenomena	Effect of primary loop inventory and ECC water density differences on DC mixing	Two-phase flow behaviors in CL and DC during ECC injection and PTS event under small rupture LOCA	Multidimensional two-phase flow effects, specifically in upper plenum, upper core region, and DC	Thermal–hydraulic phenomena during LOCA of PWR
Objectives	SET^a	SET	IT^b and SET	IT and SET

^aSeparate effects test. ^bIntegral test.