| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
Reducing a diameter and rotational speed of the propeller turbines of wind power or tidal power generations is beneficial to cut a cost and to save an environment. However, reducing them leads to an increase of the aerodynamic losses due to induced and profile drags of the blades. In the present work, experimental and numerical investigations were carried out to improve aerodynamic characteristics of the propeller turbine with the small diameter and the low rotational speed. Experimental results show that the axial torque and the power are increased by swept-back blade. The numerical result shows that the influence of the induced velocity of the swept-back blade on the blade is reduced.
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