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Air enters a 11-m-long section of an ellipse of cross section 30 cm × 15 cm...

Air enters a 11-m-long section of an ellipse of cross section 30 cm × 15 cm made of commercial steel at an average velocity of 5 m/s. Disregarding the entrance effects, determine the fan power needed to overcome the pressure losses in this section of the channel if Reynolds number is 2000.

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