Symbol

Description

Units

H

Height

m

∆H

Head difference

m

g

gravitational force

m/s2

V act

Actual Velocity

m/s

V th

Theoretical Velocity

m/s

V Max

Maximum Tidal Velocity

m/s

V Rated

Rated Tidal Velocity

m/s

K L

Channel Loss Coefficient

K T

Turbine Loss Coefficient

σ

solidity

Cp

Power Coefficient

U Max

Maximum tip speed

m/s

n gear

Gearbox/transmission efficiency

%

n gen

Generator efficiency

%