International Journal of Rotating Machinery / 2016 / Article / Tab 1 / Research Article
The Design Method of Axial Flow Runners Focusing on Axial Flow Velocity Uniformization and Its Application to an Ultra-Small Axial Flow Hydraulic Turbine Table 1 Specifications of test runners.
Hub Mid Tip Original Radius [mm] 15.1 24.6 34.1 Solidity 1.04 0.72 0.57 Blade angle [°] 16.9 21.0 24.7 Airfoil MEL031 Blade number 4 Case 1 Radius [mm] 15.1 24.6 34.1 Solidity 0.97 0.72 0.58 Blade angle [°] 31.7 27.8 31.0 Airfoil MEL031 Blade number 4 Case 2 Radius [mm] 15.1 24.6 34.1 Solidity 0.95 0.72 0.59 Blade angle [°] 36.4 19.1 11.3 Airfoil MEL031 Blade number 4 Case 3 Radius [mm] 15.1 24.6 34.1 Solidity 0.95 0.73 0.60 Blade angle [°] 38.0 17.0 7.6 Airfoil MEL031 Blade number 4