Experimental Study of a Low-Specific Speed Francis Model Runner during Resonance

Table 1

Measurement summary.

Description	Flow	nED	QED	Efficiency	Head		Speed
	(m^3/s)	(–)	(–)	(–)	(m)	(°)	(rpm)
BEP1	0.107	0.185	0.152	0.916	3.45	10.0	185.1
BEP2	0.134	0.179	0.154	0.916	5.2	10.0	219.8
BEP3	0.160	0.176	0.156	0.920	7.2	10.0	254.3
BEP4	0.183	0.178	0.154	0.919	9.6	10.0	297.8
BEP5	0.209	0.178	0.155	0.920	12.6	10.0	340.5
BEP6	0.232	0.180	0.154	0.920	15.55	10.0	381.7

is the guide vane opening as defined in the IEC60193 where 0° is the closed position.