Question: 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

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

100C T100C Alr T.- 25C D-1 m D-1m w =?

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