I'm trying to calculate the hydraulic efficiency for this turbine by using the formula:
E(hyd) = (VwU)/gH
where Vw= Velocity of whirl at inlet, U=velocity of runner at inlet, H=Given Head, and g=acceleration due to gravity.
But every time I get the efficiency more than 1 (which of course isn't possible).
I have tried this multiple but everytime it is more than 1. So I'd really appreciate if someone would properly guide me on how to make velocity triangles for this specific problem. Thanks.