From the results it can be concluded that the ideal blade angles, for optimal power output, are α=16.6890, γ=18.20 and δ=22.3570.
blade angle has a significant effect on turbine efficiency. twenty-one degree blade angle had 38.10% efficiency at the water flow rate of 2 m/s. It could reach
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### Study the Effect of Blade Angle on Hydrokinetic Turbine Performance. ***Abstract -*** *Harnessing renewable energy from water currents, such as rivers and tidal streams, without extensive infrastructure, positions hydrokinetic turbines as a highly promising technology. This research details the design and optimization of hydrokinetic turbine blade profiles to significantly improve their efficiency and overall performance. A comprehensive analysis, utilizing Computational Fluid Dynamics (CFD) simulations, was conducted to investigate the influence of varying angles on blade hydrodynamic performance. The findings conclusively demonstrate that the optimal selection of the blade angle can substantially enhance turbine efficiency, thus bolstering its potential for large-scale energy production. Furthermore, a specific angle of 67.5 degrees exhibited an unexpectedly superior power output compared to angles of 15 and 45 degrees. This work advances hydrokinetic technology and provides a robust framework for the continued optimization of renewable energy systems.*. ***Keywords:*** CFD, energy, hydrokinetic turbine, blade angle. The objective of this project is to design, build, and test a hydrokinetic turbine with different blade angles.
Based on the optimized blade angles, the efficiencies are improved by 1.12 % and 1.42 % at N S = 150 and 270 respectively with a constant power output of 30 MW.
The fluid angle of attack decreases as the blade inlet angle increases at high flow, allowing the impeller power loss to drop and performance to increase. To
# Francis turbine. Francis inlet scroll at the Grand Coulee Dam. Side-view cutaway of a vertical Francis turbine. Here water enters horizontally in a spiral-shaped pipe (spiral case) wrapped around the outside of the turbine's rotating *runner* and exits vertically down through the center of the turbine. The **Francis turbine** is a type of water turbine. Francis turbines are the most common water turbine in use, and can achieve over 95% efficiency. A wicket gate "Wicket gate (hydraulics)") around the outside of the turbine's rotating runner controls the rate of water flow through the turbine for different power production rates. Francis turbines are usually mounted with a vertical shaft, to isolate water from the generator. The Francis turbine is a type of reaction turbine, a category of turbine in which the working fluid comes to the turbine under immense pressure and the energy is extracted by the turbine blades from the working fluid.
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