Effect of Flow Blockage on the Coolability during Reflood in a 2 × 2 Rod Bundle

Table 4

Quench time at the upstream and downstream region of blockage.

𝑉𝑟 (cm/s)	Test	Upstream (600 mm)		Downstream (1190 mm)
		1.0 kW/m	1.5 kW/m	1.0 kW/m	1.5 kW/m
1.0	Non-blockage	231.6	261.5	401.9	483.4
	90% blockage	237.7	313.4	332.7	497.0
1.5	Non-blockage	203.9	231.4	340.5	404.4
	90% blockage	208.3	278.7	262.2	404.6
2.0	Non-blockage	186.3	211.6	303.5	363.1
	90% blockage	188.3	252.2	235.7	334.7
2.5	Non-blockage	171.5	196.5	276.2	335.4
	90% blockage	168.6	203.7	219.9	279.5
3.5	Non-blockage	147.7	161.3	243.0	290.7
	90% blockage	137.5	158.3	198.8	249.2