A horizontal disk 1 m in diameter rotates in air at 25?C. If the disk is at
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A horizontal disk 1 m in diameter rotates in air at 25?C. If the disk is at 100?C, estimate the RPM at which natural convection for a stationary disk becomes less than 10% of the heat transfer for a rotating disk.GIVENA rotating horizontal disk in airDiameter (D) = 1 mAir temperature (T??) = 25?CDisk temperature (Ts) = 100?CASSUMPTIONSSteady stateconditions
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The characteristic length for free convection from the stationary disk is The Rayleigh numb...View the full answer
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Related Book For 
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn
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