Jet Propulsion/Euler turbine equation

The energy added to a stream of fluid flowing through the blades in a blade row:

$(h_2+u_2^2/2)-(h_1+u_1^2/2)=\omega (r_2{v}_2-r_1{v}_1)$

where

1 is upstream and 2 is downstream

ω is the rotor angular velocity

r is the distance from the axis of the stream tube upstream and downstream

v is the swirl (tangential) velocity component of the fluid velocity upstream and downstream

u is the impeller tip speed, which is defined as, u = (diameter in inches X RPM)/229.18