6- A 10-m-diameter rotor for a wind turbine is to be designed for use in an area where the characteristic wind speed is 40 km/h. The rotor will be restricted to rotating at 8 rpm, and the turbine is expected to deliver 550 kW under design conditions. For the rotor shape being considered, viscous effects are negligible for Reynolds numbers greater than 10. A 1:20 scale model of the rotor is tested in a wind tunnel with an airspeed that is the same as in the prototype. (a) What rotational speed should be used in the model? (b) What is the power output expected in the model? Assume standard air at sea level.

6- A 10-m-diameter rotor for a wind turbine is to be designed for use in an area where the characteristic wind speed is 40 km/h. The rotor will be restricted to rotating at 8 rpm, and the turbine is expected to deliver 550 kW under design conditions. For the rotor shape being considered, viscous effects are negligible for Reynolds numbers greater than 10. A 1:20 scale model of the rotor is tested in a wind tunnel with an airspeed that is the same as in the prototype. (a) What rotational speed should be used in the model? (b) What is the power output expected in the model? Assume standard air at sea level.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Dimensionless friction velocity μ*
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