Design of the efficient rotor with low compaction for middle2head wind2driven water pump based on blade element theory and CFD
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Abstract:
In order to reduce the threshold wind velocity of wind2driven water pump and improve the disadvantages of multiple blade, large compaction, and low wind power coefficient in the traditional wind 2driven water pump, the blade element theory was used to design the aerodynamic shape of blades in the wind2driven water pump. The correction factor was introduced, and the chord length and setting angle of the blade were optimized. The CFD method was used to perform numerical simulation of the water pump. The results showed that the designed wind2driven water pump can start at a rate of 215 m/ s under the breeze con2 dition, and the wind power coefficient can reach 0146. The blade has great three 2dimensional flowing characteristics and the air is stable without flow separations under certain condition. The designed wind 2driven water pump advantages of middle head, low compaction, and low starting wind speed, which can expand the scope of wind energy utilization.
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