Paper Title
The Influence Of The Geometrical Parameters Of Propeller-Type Current-Meter On Its Performance

For many decades, current-meters are used to measure flow velocity in open channels and also closed conduits. Nevertheless, there is not much information on basic equations of propeller-type current-meter. In this paper, by using momentum and airfoil theory approaches, we tried to find theoretical equations for driving torque exerted on blades. Then by equating two obtained equations, the influence of solidity, pitch value and hub to tip radius ratio on full fluid guidanceis investigated. Keywords- driving torque, theoretical equation, Propeller-type, Current-meter, Velocity measurement